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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	GREEN DOT CORP
Trading Symbol	GDOT
Entity Central Index Key	0001386278
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		51,925,496

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Unrestricted cash and cash equivalents	$ 1,268,137	$ 919,243
Restricted cash	86,608	90,852
Investment securities available-for-sale, at fair value	15,875	11,889
Settlement assets	179,520	209,399
Accounts receivable, net	29,337	35,277
Prepaid expenses and other assets	53,219	47,086
Income tax receivable	0	7,459
Total current assets	1,632,696	1,321,205
Investment securities available-for-sale, at fair value	132,673	141,620
Loans to bank customers, net of allowance for loan losses of $451 and $291 as of March 31, 2018 and December 31, 2017, respectively	19,713	18,570
Prepaid expenses and other assets	8,157	8,179
Property and equipment, net	100,358	97,282
Deferred expenses	14,608	21,791
Net deferred tax assets	6,639	6,507
Goodwill and intangible assets	574,141	582,377
Total assets	2,488,985	2,197,531
Current liabilities:
Accounts payable	32,398	34,863
Deposits	1,293,272	1,022,180
Obligations to customers	69,874	95,354
Settlement obligations	11,672	6,956
Amounts due to card issuing banks for overdrawn accounts	1,239	1,371
Other accrued liabilities	105,640	123,397
Deferred revenue	22,999	30,875
Note payable	20,906	20,906
Income tax payable	2,818	74
Total current liabilities	1,560,818	1,335,976
Other accrued liabilities	31,612	30,520
Note payable	53,478	58,705
Net deferred tax liabilities	7,786	7,780
Total liabilities	1,653,694	1,432,981
Commitments and contingencies (Note 16)
Stockholders’ equity:
Class A common stock, $0.001 par value; 100,000 shares authorized as of March 31, 2018 and December 31, 2017; 51,841 and 51,136 shares issued and outstanding as of March 31, 2018 and December 31, 2017, respectively	52	51
Additional paid-in capital	356,052	354,789
Retained earnings	480,471	410,440
Accumulated other comprehensive loss	(1,284)	(730)
Total stockholders’ equity	835,291	764,550
Total liabilities and stockholders’ equity	$ 2,488,985	$ 2,197,531

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Allowance For Loan Losses	$ 451	$ 291
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	51,841,000	51,136,000
Common stock, shares outstanding	51,841,000	51,136,000

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating revenues:
Card revenues and other fees	$ 130,060	$ 100,969
Processing and settlement service revenues	100,240	90,675
Interchange revenues	84,698	61,357
Total operating revenues	314,998	253,001
Operating expenses:
Sales and marketing expenses	91,968	71,685
Compensation and benefits expenses	54,507	41,218
Processing expenses	48,425	40,942
Other general and administrative expenses	43,718	37,780
Total operating expenses	238,618	191,625
Operating income	76,380	61,376
Interest income	5,600	2,854
Interest expense	(1,516)	(1,665)
Income before income taxes	80,464	62,565
Income tax expense	10,433	21,811
Net income	$ 70,031	$ 40,754
Basic earnings per common share (in dollars per share)	$ 1.36	$ 0.81
Diluted earnings per common share (in dollars per share)	$ 1.29	$ 0.78
Basic weighted-average common shares issued and outstanding (shares)	51,439	50,458
Diluted weighted-average common shares issued and outstanding (shares)	54,234	52,497

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 70,031	$ 40,754
Other comprehensive (loss) income
Unrealized holding (losses) gains, net of tax	(554)	13
Comprehensive income	$ 69,477	$ 40,767

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net income	$ 70,031	$ 40,754
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	8,922	8,749
Amortization of intangible assets	8,236	6,557
Provision for uncollectible overdrawn accounts	18,385	18,246
Employee stock-based compensation	9,360	6,534
Amortization of premium on available-for-sale investment securities	320	322
Amortization of deferred financing costs	398	394
Impairment of capitalized software	0	156
Changes in operating assets and liabilities:
Accounts receivable, net	(12,626)	5,451
Prepaid expenses and other assets	(6,111)	968
Deferred expenses	7,183	5,565
Accounts payable and other accrued liabilities	(18,936)	(13,267)
Deferred revenue	(6,480)	(8,128)
Income tax receivable/payable	10,136	21,629
Other, net	51	929
Net cash provided by operating activities	88,869	94,859
Investing activities
Purchases of available-for-sale investment securities	(13,774)	(19,961)
Proceeds from maturities of available-for-sale securities	17,676	28,989
Proceeds from sales of available-for-sale securities	124	15,318
Payments for acquisition of property and equipment	(13,386)	(11,844)
Net increase in loans	(1,143)	(1,199)
Acquisition, net of cash acquired	0	(139,256)
Net cash used in investing activities	(10,503)	(127,953)
Financing activities
Borrowings from notes payable	0	20,000
Repayments of borrowings from notes payable	(5,625)	(25,625)
Borrowings on revolving line of credit	0	205,000
Repayments on revolving line of credit	0	(155,000)
Proceeds from exercise of options	7,802	5,155
Taxes paid related to net share settlement of equity awards	(15,898)	(2,162)
Net increase in deposits	271,092	88,947
Net increase in obligations to customers	9,115	8,269
Contingent consideration payments	(202)	(192)
Repurchase of Class A common stock	0	(50,000)
Deferred financing costs	0	(164)
Net cash provided by financing activities	266,284	94,228
Net increase in unrestricted cash, cash equivalents and restricted cash	344,650	61,134
Unrestricted cash, cash equivalents and restricted cash, beginning of period	1,010,095	744,761
Unrestricted cash, cash equivalents and restricted cash, end of period	1,354,745	805,895
Cash paid for interest	1,118	1,271
Cash paid for income taxes	80	122
Unrestricted cash and cash equivalents	1,268,137	785,838
Restricted cash	$ 86,608	$ 20,057

Organization

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Green Dot Corporation (“we,” “our,” or “us” refer to Green Dot Corporation and its consolidated subsidiaries) is a pro-consumer bank holding company and financial technology innovator with a mission to reinvent personal banking for the masses. We employ a unique “products and platform” operating model whereby we use our banking and technology assets to design, build and distribute our branded financial services products directly to consumers through a large-scale omni-channel national distribution platform, while also allowing qualified third party partners to access those same banking and technology assets to design, build and distribute their own bespoke financial services directly to their consumers through their own distribution platforms. Through our six revenue divisions and our subsidiary bank, Green Dot Bank, we are a leading provider of prepaid cards, debit cards, checking accounts, secured credit cards, payroll debit cards, consumer cash processing services, wage disbursements and tax refund processing services. With approximately 100,000 major name U.S. retail stores selling our products, several leading direct-to-consumer websites, thousands of tax preparation offices, several apps available in the two leading app stores and distribution through several enterprise-scale “Banking as a Service,” or "BaaS," partnerships, we are one of the most broadly distributed banking franchises in the United States. We are headquartered in Pasadena, California, with additional facilities throughout the United States and in Shanghai, China.

As the regulated entity and issuing bank for substantially all products and services we provide, whether our own or on behalf of a BaaS platform partner, we are directly accountable for all aspects of each program’s integrity, inclusive of ensuring the program’s compliance with all applicable banking regulations, applicable state and federal law and our various internal governance policies and procedures related to all areas of risk and compliance, in addition to deploying enterprise-class risk management practices and procedures to ensure each program’s initial and ongoing safety and soundness.

Our products and services:

We offer consumers a broad collection of financial products and services managed through several diverse business lines which are then made available to consumers through a widely-available “branchless" distribution network in the United States. Many of the products and services we internally create and distribute are marketed under the Green Dot brand name, which we believe is both a well-known and highly trusted brand name for millions of consumers. Our branchless network consists of:


•	distribution arrangements with approximately 100,000 mostly major chain retail locations, which we refer to as “retail distributors” and thousands of neighborhood Financial Service Center locations;


•	several differently branded, Green Dot-owned and operated direct-to-consumer online and direct mail customer acquisition platforms;


•	corporate distribution partnerships with businesses that provide payroll cards to their employees to receive wage disbursements;


•	more than 25,000 small and large tax preparation companies and individual tax preparers, which are sometimes referred to as electronic return originators, or “EROs”, who are able to offer our products and services to their customers through the use of various tax preparation industry software packages with which our products are integrated;


•	apps compatible with the iOS and Android operating systems downloaded through the corresponding app store; and


•	platform partners’ distribution channels that those partners use to acquire customers for their bespoke products and services that are powered by our BaaS Platform.

Our products and services include several deposit account programs, such as network-branded reloadable prepaid debit cards marketed under several leading consumer brand names, which we collectively refer to as "GPR cards," consumer checking accounts, small business checking accounts, network-branded gift cards (known as open-loop), secured credit cards and other financial services.

We also offer several products and services that specialize in facilitating the movement cash on behalf of consumers and businesses. These products and services include: our proprietary swipe reload system for crediting cash onto an enabled payment card by swiping the payment card at the point of sale at any Green Dot Network participating retailer; MoneyPak, a product that allows a consumer to add funds to accounts we issue or accounts issued by other United States chartered and regulated third party banks; and e-cash remittance services, a service that allows a consumer

Note 1—Organization (continued)

to transfer money to a smartphone for fulfillment at a Green Dot participating retailer. We refer to these services collectively as our cash transfer products. We also provide disbursement services through our Simply Paid platform that enables a payment solution for companies to pay their workforce and customers in the time and manner they desire and provide tax refund transfers that provide the processing technology to facilitate receipt of a taxpayers' refund proceeds.

Our BaaS Platform:

Through our BaaS Platform, we currently power the following types of products and services on behalf of several of America’s largest retail, consumer, technology and financial services companies:


•	Mobile banking;


•	Loan disbursement accounts;


•	Spend-based Mobile P2P services, such as Apple Pay Cash;


•	Money transfer services;


•	GPR cards;


•	Network branded "open loop" gift cards;


•	Instant payment and wage disbursements;


•	Small business checking accounts and debit cards; and


•	Consumer checking accounts.

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America, or GAAP. We consolidated our wholly-owned subsidiaries and eliminated all significant intercompany balances and transactions. We have also prepared the accompanying unaudited consolidated financial statements in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X and, consequently, they do not include all of the annual disclosures required by GAAP. Reference is made to our Annual Report on Form 10-K for the year ended December 31, 2017 for additional disclosures, including a summary of our significant accounting policies. There have been no material changes to our significant accounting policies during the three months ended March 31, 2018, other than the adoption of the accounting pronouncements discussed below. In our opinion, the accompanying unaudited consolidated financial statements contain all adjustments, consisting of normal and recurring items, except as otherwise noted, necessary for the fair presentation of our financial position, results of operations and cash flows for the interim periods presented. Recent Accounting Pronouncements Recently issued accounting pronouncements not yet adopted In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other ("ASU 2017-04"): Simplifying the Test for Goodwill Impairment, which simplifies the existing two-step guidance for goodwill impairment testing by eliminating the second step resulting in a write-down to goodwill equal to the initial amount of impairment determined in step one. The ASU is to be applied prospectively for reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. We are currently evaluating the impact of the provisions of ASU 2017-04 on our consolidated financial statements, however, we do not anticipate it will have a material impact upon adoption. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13") that requires financial assets measured at amortized cost be presented at the net amount expected to be collected. Credit losses on available-for-sale debt securities should be recorded through an allowance for credit losses limited by the amount that the fair value is less than amortized cost. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements. Note 2—Summary of Significant Accounting Policies (continued) In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASU 2016-02") in order to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet for those leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for leases with a term greater than 12 months. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those periods, using a modified retrospective approach and early adoption is permitted. We are currently in the process of evaluating the impact of ASU 2016-02 on our consolidated financial statements. Recently adopted accounting pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), and has since been modified through additional technical corrections since its original issuance (collectively ASC 606). ASU 2014-09 supersedes nearly all existing revenue recognition guidance under current GAAP. The core principle of ASU 2014-09, is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. The standard defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under previous GAAP. The standard allows companies to apply either a full retrospective approach, which requires applying the standard to each prior year reporting period presented, or a modified retrospective approach with a cumulative effect adjustment recognized upon adoption. We adopted the provisions of the standard on January 1, 2018 using the modified retrospective approach, which did not result in any cumulative adjustment to opening retained earnings nor did it have a material impact on our consolidated financial statements. The adoption of ASU 2014-09, however, requires expanded disclosures under the new guidance. See Note 3 - Revenues for further information and additional discussion around changes identified to our policies under the new accounting pronouncement. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). ASU 2016-01 revises the classification and measurement of investments in certain equity investments and the presentation of certain fair value changes for certain financial liabilities measured at fair value. ASU 2016-01 requires the change in fair value of many equity investments to be recognized in net income. We adopted the provisions of ASU 2016-01 on January 1, 2018, the result of which did not have any impact upon our consolidated financial statements. In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash ("ASU 2016-18"), to require that restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total cash amounts shown on the statement of cash flows. Consequently, transfers between cash and restricted cash will not be presented as a separate line item in the operating, investing or financing sections of the cash flow statement. The amendments should be applied retrospectively to each period presented. We adopted the provisions of ASU 2016-18 on January 1, 2018, the effect of which resulted in an immaterial reclassification in presentation on our statement of cash flows, but had no affect on our consolidated financial results. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act. The amendments in this ASU also require certain disclosures about stranded tax effects. We adopted the provisions of ASU 2018-02 as of December 31, 2017, the result of which did not have a material impact upon our consolidated financial statements.

Revenues

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenues

Adoption of ASC 606

On January 1, 2018, we adopted ASC 606 using the modified retrospective method applied to contracts which were not completed upon adoption, the impact of which did not result in any cumulative adjustment to our retained earnings. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts have not been adjusted and continue to be reported in accordance with our historical accounting policies.

The impact of our adoption of ASC 606 was limited to a change in presentation of certain incentive agreements. Prior to the adoption of ASC 606, incentive payments with our retail distributors and other partners had generally been recorded as a reduction to revenues over the related period of benefit the incentive payment related. Upon the adoption of ASC 606, such payments are classified as sales and marketing expenses since these contractual arrangements have been determined to be outside the scope of contracts with our customers under the new accounting standard. The total amount of incentive payments recognized was $1.8 million and $1.1 million for the three months ended March 31, 2018 and 2017.

Accounting Policy Update

Our operating revenues consist of card revenues and other fees, processing and settlement service revenues and interchange revenues. The core principle of the new revenue standard is that these revenues will be recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services, as determined under a five-step process.

A description of our principal revenue generating activities is as follows:

Card Revenues and Other Fees

Card revenues and other fees consist of monthly maintenance fees, new card fees, ATM fees, and other card revenues. We earn these fees based upon the underlying terms and conditions with each of our cardholders that obligate us to stand ready to provide account services to each of our cardholders over the contract term. Agreements with our cardholders are considered daily service contracts as they are not fixed in duration.

We charge maintenance fees on a monthly basis pursuant to the terms and conditions in the applicable cardholder agreements. We recognize monthly maintenance fees ratably over each day in the monthly bill cycle in which the fee is assessed, which represents the period our cardholders receive the benefits of our services and our performance obligation is satisfied.

We charge new card fees when a consumer purchases a new card in a retail store. The new card fee provides our cardholders a material right and accordingly, we defer and recognize new card fee revenues on a straight-line basis over our average card lifetime, which is currently five months for our GPR cards and six months for our gift cards. We determine the average card lifetime based on our recent historical data for comparable products. We measure card lifetime for our GPR cards as the time, inclusive of reload activity, between sale (or activation) of the card and the date of the last positive balance. We measure the card lifetime for our gift cards as the redemption period during which cardholders initiate the substantial majority of their transactions. We reassess average card lifetime quarterly. We report the unearned portion of new card fees as a component of deferred revenue in our consolidated balance sheets. See Contract Balances below for further information.

We charge ATM fees to cardholders when they withdraw money at certain ATMs in accordance with the terms and conditions in our cardholder agreements. We recognize ATM fees when the withdrawal is made by the cardholder, which is the point in time our performance obligation is satisfied and service is transferred. Since our cardholder agreements are considered daily service contracts, our performance obligations for these types of transactional based fees are satisfied on a daily basis, or as each transaction occurs.

Other revenues consist primarily of revenue associated with our gift card program, transaction-based fees and fees associated with optional products or services, which we offer our cardholders at their election. Since our performance obligations are settled daily, we recognize most of these fees at the point in time the transactions occur which is when the underlying control of the services are transferred. In the case of our gift card program, we record the related revenues using the redemption method.

Note 3—Revenues (continued)

Substantially all our fees are collected from our cardholders at the time the fees are assessed and debited from their account balance.

Processing and Settlement Service Revenues

Our processing and settlement services consist of cash transfer revenues, Simply Paid disbursement revenues, and tax refund processing service revenues.

We generate cash transfer revenues when consumers purchase our cash transfer products (reload services) in a retail store. Our reload services are subject to the same terms and conditions in each of the applicable cardholder agreements as discussed above. We recognize these revenues at the point in time the reload services are completed. Similarly, we earn Simply Paid disbursement fees from our business partners as payment disbursements are made.

We earn tax refund processing service revenues when a customer of a third-party tax preparation company chooses to pay their tax preparation fee through the use of our tax refund processing services. Revenues we earn from these services are generated from our contractual relationships with the tax software transmitters. These contracts may be multi-year agreements and vary in length, however, our underlying promise obligates us only to process each refund transfer on a transaction by transaction basis as elected by the taxpayer. Accordingly, we recognize tax refund processing service revenues at the point in time we remit each taxpayer’s proceeds from his or her tax return.

Interchange

We earn interchange revenues from fees remitted by the merchant’s bank, which are based on rates established by the payment networks, such as Visa and MasterCard, when account holders make purchase transactions using our card products and services. We recognize interchange revenues at the point in time the transactions occur, as our performance obligation is satisfied.

Principal vs Agent

For all our significant revenue-generating arrangements, we record revenues on a gross basis except for our tax refund processing service revenues which are recorded on a net basis.

Disaggregation of Revenues

Our products and services are offered only to customers within the United States. We determine our operating segments based on how our chief operating decision maker manages our operations, makes operating decisions and evaluates operating performance. Within our segments, we believe that the nature, amount, timing and uncertainty of our revenue and cash flows and how they are affected by economic factors can be further illustrated based on the timing in which revenue for each of our products and services is recognized.

The following table disaggregates our revenues by the timing in which the revenue is recognized:



	Three Months Ended March 31, 2018
	Account Services		Processing and Settlement Services
Timing of revenue recognition	(In thousands)
Transferred at a point in time	$	136,526	$	100,235
Transferred over time	77,346		891
Operating revenues	$	213,872	$	101,126

Within our Account Services segment, revenues recognized at a point in time are comprised of ATM fees, interchange, and other similar transaction-based fees. Revenues recognized over time consists of new card fees, monthly maintenance fees and revenue earned from gift cards. Substantially all of our processing and settlement services are recognized at a point in time.

Refer to Note 18- Segment Information for our revenues disaggregated by our products and services and the components to our total operating revenues on our Consolidated Statements of Operations for additional information.

Note 3—Revenues (continued)

Significant Judgments and Estimates

Transaction prices related to our account services are based on stand-alone fees stated within the terms and conditions, however, may also include certain elements of variable consideration depending upon the product’s features, such as cardholder incentives, monthly fee concessions and reserves on accounts that may become overdrawn. We estimate such amounts using historical data or customer behavior patterns to determine these estimates which are allocated accordingly as a reduction to the corresponding fee revenue. Additionally, while the number of transactions that a cardholder may perform is unknown, any uncertainty is resolved at the end of each daily service contract.

Contract Balances

As disclosed on our Consolidated Balance Sheets, we record deferred revenue for any upfront payments received in advance of our performance obligations being satisfied. These contract liabilities consist principally of unearned new card fees and monthly maintenance fees, of which we recognized approximately $18.9 million for the three months ended March 31, 2018 that were included in deferred revenue at the beginning of the period. We did not recognize any revenue during the three months ended March 31, 2018 from performance obligations satisfied in previous periods. Changes in the deferred revenue balance are driven primarily by the amount of new card fees recognized during the period, offset by the amount of new cards sold.

Costs to Obtain or Fulfill a Contract

Our incremental direct costs of obtaining a contract are derived primarily from revenue share payments we make to our retail partners associated with new card sales. These commissions are generally capitalized upon payment and expensed over the period the corresponding revenue is recognized. These deferred commissions are not material and are included in deferred expenses on our Consolidated Balance Sheets.

Practical Expedients and Exemptions

Any unsatisfied performance obligations at the end of the period relate to contracts with customers that either have an original expected length of one year or less or are contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. Therefore, no additional disclosure is provided for these performance obligations.

Business Combination

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Business Combination

On February 28, 2017, we completed our acquisition of all the membership interests of UniRush, LLC ("UniRush"), an online direct-to-consumer GPR card and corporate payroll card provider. The fair value of the total consideration in connection with the acquisition was approximately $163.7 million, which included cash and contingent consideration in the form of an earn-out. We financed the transaction with $142.2 million in cash, of which $95 million was raised from a combination of our Revolving Facility, as discussed in Note 10 — Note Payable, and subordinated notes payable of $20 million to the selling shareholders of UniRush. The subordinated notes were repaid during the three months ended March 31, 2017. The transaction terms include an earn-out equal to the greater of (i) a specified percentage of the revenue generated by the online direct-to-consumer GPR card portfolio for the five-year period following the closing or (ii) $20 million, payable quarterly over the five years.

The following table summarizes the fair value of consideration transferred:



	Consideration
	(In thousands)
Cash, including proceeds from notes payable	$	142,154
Fair value of contingent consideration	21,500
Total consideration	$	163,654

Note 4—Business Combination (continued)

The allocation of the purchase price was as follows:



	February 28, 2017
	(In thousands)
Assets:
Cash and cash equivalents	$	656
Accounts receivable, net	5,745
Prepaid expenses and other assets	5,146
Property and equipment, net	4,233
Intangible assets	69,000
Goodwill	93,435
Total assets:	178,215

Liabilities:
Accounts payable	10,861
Other liabilities	3,700
Total liabilities:	14,561

Net assets acquired	$	163,654

Goodwill of approximately $93.4 million represents the excess of the purchase price over the estimated fair value of the underlying identifiable tangible and intangible assets acquired and liabilities assumed. The goodwill arises from the opportunity for synergies and economies of scale from the combined companies, and expanding our reach into the online direct-to-consumer and corporate payroll distribution channels. Although the goodwill will not be amortized for financial reporting purposes, it is anticipated that substantially all of the goodwill will be deductible for federal tax purposes over the statutory period of 15 years.

Intangible assets consist primarily of customer relationships and trade name of approximately $58.5 million and $5.5 million, respectively. The customer relationships will be amortized over its estimated useful life of 5-10 years and the trade name will be amortized over a period of 15 years.

Our acquisition of UniRush was accounted for under the acquisition method of accounting, with the operating results of UniRush included in our consolidated statements of operations beginning March 1, 2017. Transaction costs incurred in connection with the acquisition were not material.

Unaudited pro forma financial information

The following unaudited pro forma summary financial results present the consolidated results of operations as if the acquisition of UniRush had occurred as of January 1, 2017, after the effect of certain adjustments, including interest expense on the debt used to fund the purchase, amortization of certain identifiable intangible assets, income and expense items not attributable to ongoing operations and related tax effects. The unaudited pro forma condensed consolidated statements of operations does not include any adjustments for any restructuring activities, operating efficiencies or cost savings. The pro forma results have been presented for comparative purposes only and are not indicative of what would have occurred had the UniRush acquisition been made as of January 1, 2017, or of any potential results which may occur in the future.



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Net revenues	$	314,998	$	272,286
Net income attributable to common stock	$	70,031	$	34,150
Basic earnings per common share	$	1.36	$	0.68
Diluted earnings per common share	$	1.29	$	0.65
Basic weighted-average common shares issued and outstanding	51,439		50,458
Diluted weighted-average common shares issued and outstanding	54,234		52,497

Investment Securities

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Our available-for-sale investment securities were as follows:



	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
	(In thousands)
March 31, 2018
Negotiable certificate of deposit	$	5,000	$	—	$	—		$	5,000
U.S. Treasury notes	10,912		—		(37		)	10,875
Agency securities	4,941		—		(1		)	4,940
Agency mortgage-backed securities	117,531		25		(1,623		)	115,933
Municipal bonds	604		—		(15		)	589
Asset-backed securities	11,316		—		(105		)	11,211
Total investment securities	$	150,304	$	25	$	(1,781	)	$	148,548

December 31, 2017
Corporate bonds	$	1,000	$	—	$	—		$	1,000
U.S. Treasury notes	10,921		—		(46		)	10,875
Agency mortgage-backed securities	121,037		52		(1,055		)	120,034
Municipal bonds	742		4		(7		)	739
Asset-backed securities	20,952		—		(91		)	20,861
Total investment securities	$	154,652	$	56	$	(1,199	)	$	153,509

As of March 31, 2018 and December 31, 2017, the gross unrealized losses and fair values of available-for-sale investment securities that were in unrealized loss positions were as follows:



	Less than 12 months					12 months or more					Total fair value		Total unrealized loss
	Fair value		Unrealized loss			Fair value		Unrealized loss			Total fair value		Total unrealized loss
	(In thousands)
March 31, 2018
U.S. Treasury notes	$	2,290	$	(11	)	$	8,585	$	(26	)	$	10,875	$	(37	)
Agency securities	4,940		(1		)	—		—			4,940		(1		)
Agency mortgage-backed securities	52,155		(541		)	48,870		(1,082		)	101,025		(1,623		)
Municipal bonds	429		(10		)	160		(5		)	589		(15		)
Asset-backed securities	—		—			11,211		(105		)	11,211		(105		)
Total investment securities	$	59,814	$	(563	)	$	68,826	$	(1,218	)	$	128,640	$	(1,781	)

December 31, 2017
U.S. Treasury notes	$	4,588	$	(21	)	$	6,288	$	(25	)	$	10,876	$	(46	)
Agency mortgage-backed securities	62,683		(453		)	44,159		(602		)	106,842		(1,055		)
Municipal bonds	—		—			193		(7		)	193		(7		)
Asset-backed securities	2,134		(2		)	18,727		(89		)	20,861		(91		)
Total investment securities	$	69,405	$	(476	)	$	69,367	$	(723	)	$	138,772	$	(1,199	)

We did not record any other-than-temporary impairment losses during the three months ended March 31, 2018 or 2017 on our available-for-sale investment securities. We do not intend to sell these investments and we have determined that it is more likely than not that we will not be required to sell these investments before recovery of their amortized cost bases, which may be at maturity.

Note 5—Investment Securities (continued)

As of March 31, 2018, the contractual maturities of our available-for-sale investment securities were as follows:



	Amortized cost		Fair value
	(In thousands)
Due in one year or less	$	15,912	$	15,875
Due after one year through five years	4,941		4,940
Due after five years through ten years	—		—
Due after ten years	604		589
Mortgage and asset-backed securities	128,847		127,144
Total investment securities	$	150,304	$	148,548

The expected payments on mortgage-backed and asset-backed securities may not coincide with their contractual maturities because the issuers have the right to call or prepay certain obligations.

Accounts Receivable

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Accounts Receivable

Accounts receivable, net consisted of the following:



	March 31, 2018			December 31, 2017
	(In thousands)
Overdrawn account balances due from cardholders	$	19,651		$	17,856
Reserve for uncollectible overdrawn accounts	(15,796		)	(14,471		)
Net overdrawn account balances due from cardholders	3,855			3,385

Trade receivables	7,479			4,231
Reserve for uncollectible trade receivables	(69		)	(3		)
Net trade receivables	7,410			4,228

Receivables due from card issuing banks	7,790			6,309
Fee advances	2,646			16,194
Other receivables	7,636			5,161
Accounts receivable, net	$	29,337		$	35,277

Activity in the reserve for uncollectible overdrawn accounts consisted of the following:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	14,471		$	11,932
Provision for uncollectible overdrawn accounts:
Fees	15,779			16,959
Purchase transactions	2,606			1,287
Charge-offs	(17,060		)	(17,945		)
Balance, end of period	$	15,796		$	12,233

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Loans to Bank Customers

3 Months Ended

Mar. 31, 2018

Loans and Leases Receivable Disclosure [Abstract]

Loans to Bank Customers

The following table presents total outstanding loans, gross of the related allowance for loan losses, and a summary of the related payment status:



	30-59 Days Past Due			60-89 Days Past Due			90 Days or More Past Due			Total Past Due			Total Current or Less Than 30 Days Past Due			Total Outstanding
	(In thousands)
March 31, 2018
Residential	$	2		$	—		$	—		$	2		$	4,122		$	4,124
Commercial	—			—			—			—			278			278
Installment	—			—			—			—			1,084			1,084
Secured credit card	1,007			968			308			2,283			12,395			14,678
Total loans	$	1,009		$	968		$	308		$	2,285		$	17,879		$	20,164

Percentage of outstanding	5.0		%	4.8		%	1.5		%	11.3		%	88.7		%	100.0		%

December 31, 2017
Residential	$	—		$	—		$	—		$	—		$	3,554		$	3,554
Commercial	—			—			—			—			315			315
Installment	1			—			—			1			1,378			1,379
Secured credit card	1,223			593			424			2,240			11,373			13,613
Total loans	$	1,224		$	593		$	424		$	2,241		$	16,620		$	18,861

Percentage of outstanding	6.5		%	3.1		%	2.3		%	11.9		%	88.1		%	100.0		%

Secured Credit Card Loans

On August 31, 2017, we completed an asset acquisition of a secured credit card portfolio for approximately $8.1 million. In exchange for the payment, we received approximately $8.2 million of secured credit card receivables. All of our credit card receivables are collateralized by the cardholders' security deposits, which also acts as the cardholders' credit limit.

Nonperforming Loans

The following table presents the carrying value, gross of the related allowance for loan losses, of our nonperforming loans. See Note 2 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2017 for further information on the criteria for classification as nonperforming.



	March 31, 2018		December 31, 2017
	(In thousands)
Residential	$	485	$	502
Installment	187		191
Total loans	$	672	$	693

Credit Quality Indicators

We closely monitor and assess the credit quality and credit risk of our loan portfolio on an ongoing basis. We continuously review and update loan risk classifications. We evaluate our loans using non-classified or classified as the primary credit quality indicator. Classified loans are those loans that have demonstrated credit weakness where we believe there is a heightened risk of principal loss, including all impaired loans. Classified loans are generally internally categorized as substandard, doubtful or loss, consistent with regulatory guidelines.

Note 7—Loans to Bank Customers (continued)

The table below presents the carrying value, gross of the related allowance for loan losses, of our loans within the primary credit quality indicators related to our loan portfolio:



	March 31, 2018				December 31, 2017
	Non-Classified		Classified		Non-Classified		Classified
	(In thousands)
Residential	$	3,634	$	490	$	3,038	$	516
Commercial	249		29		315		—
Installment	678		406		1,059		320
Secured credit card	14,678		—		13,613		—
Total loans	$	19,239	$	925	$	18,025	$	836

Impaired Loans and Troubled Debt Restructurings

When, for economic or legal reasons related to a borrower’s financial difficulties, we grant a concession for other than an insignificant period of time to a borrower that we would not otherwise consider, the related loan is classified as a Troubled Debt Restructuring, or TDR. Our TDR modifications involve an extension of the maturity date at a stated interest rate lower than the current market rate for new debt with similar risk. The following table presents our impaired loans and loans that we modified as TDRs as of March 31, 2018 and December 31, 2017:



	March 31, 2018				December 31, 2017
	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
	(In thousands)
Residential	$	490	$	361	$	516	$	452
Commercial	29		28		—		—
Installment	223		101		262		120

Allowance for Loan Losses

Activity in the allowance for loan losses consisted of the following:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	291		$	277
Provision for loans	268			—
Loans charged off	(756		)	(5		)
Recoveries of loans previously charged off	648			9
Balance, end of period	$	451		$	281

Employee Stock-Based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee Stock-Based Compensation

We currently grant restricted equity awards to employees and directors under our 2010 Equity Incentive Plan. Additionally, through our 2010 Employee Stock Purchase Plan, employees are able to purchase shares of our Class A common stock at a discount through payroll deductions. We have reserved shares of our Class A common stock for issuance under these plans.

Restricted Stock Units

The following table summarizes restricted stock units with only service conditions granted under our 2010 Equity Incentive Plan:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Restricted stock units granted	63		115
Weighted-average grant-date fair value	$	61.26	$	27.44

Note 8—Employee Stock-Based Compensation (continued)

Performance Based Restricted Stock Units

We grant performance-based restricted stock units to certain employees which are subject to the attainment of minimum pre-established annual performance targets. The majority of these awards are tied to the achievement of an annual non-GAAP earnings per share target for the grant year. The actual number of shares subject to the award is determined at the end of the annual performance period and may range from zero to 150% percent of the target shares granted. These awards contain an additional service component after each annual performance period is concluded and the unvested balance of the shares determined at the end of the annual performance period will vest over the remaining requisite service period. Compensation expense related to these awards is recognized using the accelerated attribution method over the four-year vesting period based on the fair value of the closing market price of our Class A common stock on the date of the grant and the estimated performance that is expected to be achieved. In the case of our Chief Executive Officer, vesting of the award is based on the achievement of a total shareholder return ("TSR") relative to the S&P 600 index over the three-year performance period. Compensation expense related to these awards is recognized over the performance period based on the grant date fair value through the use of a Monte Carlo simulation and are not subsequently re-measured.

The following table summarizes the performance-based restricted stock units granted under our 2010 Equity Incentive Plan:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Performance based restricted stock units granted ⁽¹⁾	444		287
Weighted-average grant-date fair value	$	39.50	$	33.29



(1	)	Performance awards granted also reflects the impact of any incremental shares awarded during the periods ended for performance periods completed. The grant date fair value for these awards are based on the grant price at the time of the initial award.

The total stock-based compensation expense recognized was $9.4 million and $6.5 million for the three months ended March 31, 2018 and 2017, respectively. Total stock-based compensation expense includes amounts related to awards of stock options, restricted stock units (including performance-based restricted stock units) and purchases under our 2010 Employee Stock Purchase Plan.

Deposits

3 Months Ended

Mar. 31, 2018

Deposits [Abstract]

Deposits

Deposits are categorized as non-interest or interest-bearing deposits as follows:



	March 31, 2018		December 31, 2017
	(In thousands)
Non-interest bearing deposit accounts
GPR deposits	$	1,046,496	$	803,549
Other demand deposits	109,381		61,264
Total non-interest bearing deposit accounts	1,155,877		864,813
Interest-bearing deposit accounts
Checking accounts	117,527		140,555
Savings	10,148		10,523
GPR deposits	3,942		—
Time deposits, denominations greater than or equal to $100	4,435		4,752
Time deposits, denominations less than $100	1,343		1,537
Total interest-bearing deposit accounts	137,395		157,367
Total deposits	$	1,293,272	$	1,022,180

Note 9—Deposits (continued)

The scheduled contractual maturities for total time deposits are presented in the table below:



	March 31, 2018
	(In thousands)
Due in 2018	$	1,965
Due in 2019	1,030
Due in 2020	1,166
Due in 2021	820
Due in 2022	797
Thereafter	—
Total time deposits	$	5,778

Note Payable

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Note Payable

In October 2014, we entered into a $225.0 million secured credit agreement with Bank of America, N.A., as an administrative agent, Wells Fargo Bank, National Association, and the other lenders party thereto. The credit agreement provides for 1) a $75.0 million five year revolving facility (the "Revolving Facility") and 2) a five year $150.0 million term loan facility ("Term Facility" and, together with the Revolving Facility, the “Senior Credit Facility"). The credit agreement also includes an accordion feature that, subject to securing additional commitments from existing lenders or new lending institutions, will allow us to increase the aggregate amount of these facilities by up to an additional $50.0 million.

As of March 31, 2018 and December 31, 2017, our outstanding debt, net of deferred financing costs of $2.5 million and $2.9 million, respectively, consisted of the following:



	March 31, 2018		December 31, 2017
	(In thousands)
Term facility	$	74,384	$	79,611
Revolving facility	—		—
Total notes payable	$	74,384	$	79,611

Quarterly principal payments of $5.6 million are payable on the loans under the Term Facility. During each of the three months ended March 31, 2018 and 2017, we made scheduled quarterly principal payments totaling $5.6 million. The Senior Credit Facility matures on October 23, 2019 and any amounts then outstanding are due upon maturity.

Interest

At our election, loans made under the credit agreement bear interest at 1) a LIBOR rate (the “LIBOR Rate") or 2) a base rate determined by reference to the highest of (a) the Bank of America prime rate, (b) the United States federal funds rate plus 0.50% and (c) a daily rate equal to one-month LIBOR rate plus 1.0% (the “Base Rate"), plus in either case an applicable margin. The applicable margin for borrowings depends on our total leverage ratio and varies from 2.50% to 3.00% for LIBOR Rate loans and 1.50% to 2.00% for Base Rate loans. The effective interest rate on borrowings outstanding as of March 31, 2018 was 4.38%. Interest expense, excluding the amortization of debt issuance costs, related to our Senior Credit Facility was $0.9 million and $1.2 million for the three months ended March 31, 2018 and 2017, respectively.

Covenants and restrictions

The Senior Credit Facility contains customary representations and warranties relating to us and our subsidiaries. Obligations under the Senior Credit Facility are secured by first priority liens on, and security interests in, substantially all of our company assets and each Guarantor, as defined in the agreement. The Senior Credit Facility also contains certain affirmative and negative covenants including negative covenants that limit or restrict, among other things, liens, indebtedness, investments and acquisitions, mergers and fundamental changes, asset sales, restricted payments, changes in the nature of the business, transactions with affiliates and other matters customarily restricted in such agreements. We must maintain a minimum fixed charge coverage ratio and a maximum consolidated leverage ratio at the end of each fiscal quarter, as set forth in the credit agreement. At March 31, 2018, we were in compliance with all such covenants.

Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income tax expense for the three months ended March 31, 2018 and 2017 differs from the amount computed by applying the statutory federal income tax rate to income before income taxes. The sources and tax effects of the differences are as follows:



	Three Months Ended March 31,
	2018		2017
U.S. federal statutory tax rate	21.0	%	35.0	%
State income taxes, net of federal tax benefit	0.9		1.4
General business credits	(0.6	)	(1.0	)
Employee stock-based compensation	(10.0	)	(1.0	)
Other	1.6		0.5
Effective tax rate	12.9	%	34.9	%

On December 22, 2017, H.R. 1, known as the Tax Cuts and Jobs Act (the "Tax Act") was signed into law and makes significant changes to U.S. income tax law. Effective in 2018, the Tax Act reduced the US federal corporate tax rate from 35% to 21%, created new taxes on certain foreign-sourced earnings and certain related-party payments, eliminated certain deductions and enhanced and extended through 2026 the option to claim accelerated depreciation deductions on qualified property.

Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, we have made reasonable estimates of the effects and recorded provisional amounts in our financial statements as of December 31, 2017. We remeasured deferred tax assets and liabilities resulting from the permanent reduction in the U.S. statutory corporate tax rate from 35% to 21% and recorded a provisional tax benefit of $6.3 million. We also analyzed the transition tax on accumulated foreign subsidiary earnings and made a provisional determination that we have no additional tax obligation. As we collect and prepare necessary data, and interpret the Tax Act and any additional guidance issued by the U.S. Treasury Department, the IRS, and other standard-setting bodies, we may make adjustments to the provisional amounts including estimates for certain employment compensation. Those adjustments may materially impact our provision for income taxes and effective tax rate in the period in which the adjustments are made. The SEC has provided up to a one-year measurement period for companies to finalize the accounting for the impacts of this new legislation and we anticipate finalizing our accounting over the coming quarters.

The effective tax rate for the three months ended March 31, 2018 and 2017 differs from the statutory federal income tax rate of 21% and 35%, respectively, primarily due to state income taxes, net of federal tax benefits, general business credits and employee stock-based compensation. The decrease in the effective tax rate for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017 is primarily due to the decrease in the statutory federal tax rate noted above and higher excess tax benefits related to stock compensation as a result of an increase in the value of our stock price.

We establish a valuation allowance when we consider it more-likely-than-not that some portion or all of the deferred tax assets will not be realized. As of March 31, 2018 and 2017, we did not have a valuation allowance on any of our deferred tax assets as we believed it was more-likely-than-not that we would realize the benefits of our deferred tax assets.

We are subject to examination by the Internal Revenue Service, or IRS, and various state tax authorities. We remain subject to examination of our federal income tax return for the years ended December 31, 2014 through 2016. We generally remain subject to examination of our various state income tax returns for a period of four to five years from the respective dates the returns were filed.

As of March 31, 2018, we have net operating loss carryforwards of approximately $37.7 million and $33.7 million for federal and state tax purposes, respectively, which will be available to offset future income. If not used, these carryforwards will expire between 2020 and 2035. In addition, we have state business tax credits of approximately $9.8 million that can be carried forward indefinitely and other state business tax credits of approximately $1.2 million that will expire between 2023 and 2027.

As of March 31, 2018 and December 31, 2017, we had a liability of $6.7 million and $5.6 million, respectively, for unrecognized tax benefits related to various federal and state income tax matters excluding interest, penalties and related tax benefits. The reconciliation of the beginning unrecognized tax benefits balance to the ending balance is as follows:

Note 11—Income Taxes (continued)



	Three Months Ended March 31,
	2018		2017
	(In thousands)
Beginning balance	$	5,560	$	7,314
Increases related to positions taken during prior years	—		—
Increases related to positions taken during the current year	1,099		1,038
Decreases related to positions settled with tax authorities	—		—
Decreases as a result of a lapse of applicable statute of limitations	—		—
Ending balance	$	6,659	$	8,352

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$	6,659	$	8,352

As of March 31, 2018 and 2017, we recognized accrued interest and penalties related to unrecognized tax benefits of approximately $1.3 million and $1.2 million, respectively.

Stockholders' Equity

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Stock Repurchase Program

In June 2015, our Board of Directors authorized, subject to regulatory approval, a repurchase of shares of our Class A Common Stock in an amount up to $150 million under a stock repurchase program with no expiration date. As of November 2017, we have repurchased all $150 million of Class A common stock under the repurchase program.

Accelerated Share Repurchases

We have entered into accelerated share repurchase arrangements (“ASRs”) with a financial institution from time to time under our stock repurchase program. The following table summarizes our ASR activity for the prior year comparative period:



	Purchase Period End Date	Number of Shares (In thousands)	Average Repurchase Price Per Share		ASR Amount (In thousands)
March 2017 ASR	November 2017	1,326	$	38.64	$	50,000	(1)



(1)	We elected to cash settle approximately $2.0 million worth of shares owed back to the counterparty under our March 2017 accelerated share repurchase agreement.

In exchange for an up-front payment in March 2017, the financial institution delivered 1.3 million shares of our Class A common stock.

The up-front payments are accounted for as a reduction to shareholders’ equity on our consolidated balance sheets in the periods the payments are made. The ASRs are accounted for in two separate transactions: 1) a treasury stock repurchase for the initial shares received and 2) a forward stock purchase contract indexed to our own stock for the unsettled portion of the ASR. The par value of the shares received are recorded as a reduction to common stock with the remainder recorded as a reduction to additional paid-in capital and retained earnings. The ASRs meet all of the applicable criteria for equity classification, and therefore are not accounted for as derivative instruments. The initial repurchase of shares result in an immediate reduction of the outstanding shares used to calculate the weighted-average common shares outstanding for basic and diluted earnings per share. The final number of shares received upon settlement for the ASR is determined based on the volume-weighted average price of our common stock over the term of the agreement less an agreed upon discount and subject to adjustments pursuant to the terms and conditions of the ASR. The shares received are retired in the periods they are delivered, but remain authorized for registration and issuance in the future.

Earnings per Common Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings per Common Share

The calculation of basic and diluted EPS was as follows:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Basic earnings per Class A common share
Numerator:
Net income	$	70,031	$	40,754
Denominator:
Weighted-average Class A shares issued and outstanding	51,439		50,458
Basic earnings per Class A common share	$	1.36	$	0.81

Diluted earnings per Class A common share
Numerator:
Net income	$	70,031	$	40,754
Denominator:
Weighted-average Class A shares issued and outstanding	51,439		50,458
Dilutive potential common shares:
Stock options	535		603
Restricted stock units	1,337		1,186
Performance based restricted stock units	915		231
Employee stock purchase plan	8		19
Diluted weighted-average Class A shares issued and outstanding	54,234		52,497
Diluted earnings per Class A common share	$	1.29	$	0.78

For the periods presented, we excluded certain restricted stock units and stock options outstanding (as applicable) which could potentially dilute basic EPS in the future, from the computation of diluted EPS as their effect was anti-dilutive. Additionally, we have excluded any performance based restricted stock units for which the performance contingency has not been met as of the end of the period. The following table shows the weighted-average number of shares excluded from the diluted EPS calculation:



	Three Months Ended March 31,
	2018	2017
	(In thousands)
Class A common stock
Options to purchase Class A common stock	—	55
Performance based restricted stock units	22	—
Total options and restricted stock units	22	55

Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Under applicable accounting guidance, fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

We determine the fair values of our financial instruments based on the fair value hierarchy established under applicable accounting guidance which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs used to measure fair value.

For more information regarding the fair value hierarchy and how we measure fair value, see Note 2–Summary of Significant Accounting Policies to the Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2017.

Note 14—Fair Value Measurements (continued)

As of March 31, 2018 and December 31, 2017, our assets and liabilities carried at fair value on a recurring basis were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
March 31, 2018	(In thousands)
Assets
Negotiable certificate of deposit	$	—	$	5,000	$	—	$	5,000
U.S. Treasury notes	—		10,875		—		10,875
Agency securities	—		4,940		—		4,940
Agency mortgage-backed securities	—		115,933		—		115,933
Municipal bonds	—		589		—		589
Asset-backed securities	—		11,211		—		11,211
Total assets	$	—	$	148,548	$	—	$	148,548

Liabilities
Contingent consideration	$	—	$	—	$	17,156	$	17,156

December 31, 2017
Assets
Corporate bonds	$	—	$	1,000	$	—	$	1,000
U.S. Treasury notes	—		10,875		—		10,875
Agency mortgage-backed securities	—		120,034		—		120,034
Municipal bonds	—		739		—		739
Asset-backed securities	—		20,861		—		20,861
Total assets	$	—	$	153,509	$	—	$	153,509

Liabilities
Contingent consideration	$	—	$	—	$	17,358	$	17,358

We based the fair value of our fixed income securities held as of March 31, 2018 and December 31, 2017 on quoted prices in active markets for similar assets. We had no transfers between Level 1, Level 2 or Level 3 assets or liabilities during the three months ended March 31, 2018 or 2017.

The following table presents changes in our contingent consideration payable for the three months ended March 31, 2018 and 2017, which is categorized in Level 3 of the fair value hierarchy:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	17,358		$	8,634
Issuance	—			18,000
Payments of contingent consideration	(202		)	(192		)
Balance, end of period	$	17,156		$	26,442

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The following describes the valuation technique for determining the fair value of financial instruments, whether or not such instruments are carried at fair value on our consolidated balance sheets.

Short-term Financial Instruments

Our short-term financial instruments consist principally of unrestricted and restricted cash and cash equivalents, settlement assets and obligations, and obligations to customers. These financial instruments are short-term in nature, and, accordingly, we believe their carrying amounts approximate their fair values. Under the fair value hierarchy, these instruments are classified as Level 1.

Investment Securities

The fair values of investment securities have been derived using methodologies referenced in Note 2–Summary of Significant Accounting Policies to the Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2017. Under the fair value hierarchy, our investment securities are classified as Level 2.

Loans

We determined the fair values of loans by discounting both principal and interest cash flows expected to be collected using a discount rate commensurate with the risk that we believe a market participant would consider in determining fair value. Under the fair value hierarchy, our loans are classified as Level 3.

Deposits

The fair value of demand and interest checking deposits and savings deposits is the amount payable on demand at the reporting date. We determined the fair value of time deposits by discounting expected future cash flows using market-derived rates based on our market yields on certificates of deposit, by maturity, at the measurement date. Under the fair value hierarchy, our deposits are classified as Level 2.

Contingent Consideration

The fair value of contingent consideration obligations, such as the earn-outs associated with our acquisitions of TPG and UniRush, are estimated through valuation models designed to estimate the probability of such contingent payments based on various assumptions. Estimated payments are discounted using present value techniques to arrive at an estimated fair value. Our contingent consideration payable is classified as Level 3 because we use unobservable inputs to estimate fair value, including the probability of achieving certain earnings thresholds and appropriate discount rates. Changes in fair value of contingent consideration are recorded through operating expenses.

Note Payable

The fair value of our note payable is based on borrowing rates currently available to a market participant for loans with similar terms or maturity. The carrying amount of our note payable approximates fair value because the base interest rate charged varies with market conditions and the credit spread is commensurate with current market spreads for issuers of similar risk. The fair value of the note payable is classified as a Level 2 liability in the fair value hierarchy.

Fair Value of Financial Instruments

The carrying values and fair values of certain financial instruments that were not carried at fair value, excluding short-term financial instruments for which the carrying value approximates fair value, at March 31, 2018 and December 31, 2017 are presented in the table below.



	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Financial Assets
Loans to bank customers, net of allowance	$	19,713	$	19,074	$	18,570	$	18,102

Financial Liabilities
Deposits	$	1,293,272	$	1,293,215	$	1,022,180	$	1,022,102
Note payable	$	74,384	$	74,384	$	79,611	$	79,611

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation and Claims In the ordinary course of business, we are a party to various legal proceedings, including, from time to time, actions which are asserted to be maintainable as class action suits. We review these actions on an ongoing basis to determine whether it is probable and estimable that a loss has occurred and use that information when making accrual and disclosure decisions. We have provided reserves where necessary for all claims and, based on current knowledge and in part upon the advice of legal counsel, all matters are believed to be adequately covered by insurance, or, if not covered, we do not expect the outcome in any legal proceedings, individually or collectively, to have a material adverse impact on our financial condition or results of operations. The third and final performance period under an earn-out provision for the acquisition of our tax refund processing business ended on June 30, 2017. We believe that our tax refund processing business did not achieve its earn-out performance target for the fiscal year performance period based on the provisions of the contract and therefore, the total potential payout of $26 million has not been accrued on our balance sheet as of March 31, 2018. We are currently in the process of resolving the final earn-out calculation with the selling shareholders with the assistance of a neutral third party who will make a determination of the final outcome. To the extent there is an unfavorable resolution for the earn-out payment, we may be required to make payment of up to $26 million. During the quarter ended June 30, 2016, we continued our planned conversion of customer files from our legacy third-party card processor to our current third-party card processor. As part of the conversion process, a small percentage of our active account holders experienced limited disruptions in service. As a result of this limited disruption in service, two putative class action complaints were filed during the second quarter of 2016. Any settlement amount paid to resolve the consolidated class actions will be borne equally between us and our third-party card processor. We have recorded an estimated accrual of approximately $2.3 million, which represents our portion of the estimated total settlement amount, all of which our insurance carrier has agreed to reimburse us. This amount is recorded in other accrued liabilities and accounts receivable on our consolidated balance sheet as of March 31, 2018. Other Matters We monitor the laws of all 50 states to identify state laws or regulations that apply (or may apply) to our products and services. We have obtained money transmitter licenses (or similar such licenses) where applicable, based on advice of counsel or when we have been requested to do so. If we were found to be in violation of any laws and regulations governing banking, money transmitters, electronic fund transfers, or money laundering in the United States or abroad, we could be subject to penalties or could be forced to change our business practices. From time to time we enter into contracts containing provisions that contingently require us to indemnify various parties against claims from third parties. These contracts primarily relate to: (i) contracts with our card issuing banks, under which we are responsible to them for any unrecovered overdrafts on cardholders’ accounts; (ii) certain real estate leases, under which we may be required to indemnify property owners for environmental and other liabilities, and other claims arising from our use of the premises; (iii) certain agreements with our officers, directors, and employees, under which we may be required to indemnify these persons for liabilities arising out of their relationship with us; and (iv) contracts under which we may be required to indemnify our retail distributors, suppliers, vendors and other parties with whom we have contracts against claims arising from certain of our actions, omissions, violations of law and/or infringement of patents, trademarks, copyrights and/or other intellectual property rights. Generally, a maximum obligation under these contracts is not explicitly stated. Because the obligated amounts associated with these types of agreements are not explicitly stated, the overall maximum amount of the obligation cannot be reasonably estimated. With the exception of overdrafts on cardholders’ accounts, historically, we have not been required to make payments under these and similar contingent obligations, and no liabilities have been recorded for these obligations in our consolidated balance sheets. For additional information regarding overdrafts on cardholders’ accounts, refer to Note 6 — Accounts Receivable. As of March 31, 2018 and December 31, 2017, we had restricted cash balances of $86.6 million and $90.9 million, which consist principally of funds required to collateralize a prefunding obligation with a business partner.

Significant Retailer Concentrations

3 Months Ended

Mar. 31, 2018

Risks and Uncertainties [Abstract]

Significant Retailer Concentrations

Significant Retailer Concentration

A credit concentration may exist if customers are involved in similar industries, economic sectors, and geographic regions. Our retail distributors operate in similar economic sectors but diverse domestic geographic regions. The loss of a significant retail distributor could have a material adverse effect upon our card sales, profitability, and revenue growth.

Revenues derived from our products sold at retail distributors constituting greater than 10% of our total operating revenues were as follows:



	Three Months Ended March 31,
	2018	2017
Walmart	33%	37%

Settlement assets derived from our products sold at retail distributors constituting greater than 10% of the settlement assets outstanding on our consolidated balance sheets were as follows:



	March 31, 2018	December 31, 2017
Walmart	32%	33%

Segment Information

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

Our operations are comprised of two reportable segments: 1) Account Services and 2) Processing and Settlement Services. We identified our reportable segments based on factors such as how we manage our operations and how our chief operating decision maker views results. Our chief operating decision maker organizes and manages our business primarily on the basis of product and service offerings and uses operating income to assess profitability.

The Account Services segment consists of revenues and expenses derived from the Company's deposit account programs, such as prepaid cards, debit cards, consumer and small business checking accounts, secured credit cards, payroll debit cards and gift cards. These deposit account programs are marketed under several of the Company's leading consumer brand names and under the brand names of the Company's Banking as a Service, or "BaaS," partners. The Processing and Settlement Services segment consists of revenues and expenses derived from the Company's products and services that specialize in facilitating the movement of cash on behalf of consumers and businesses, such as consumer cash processing services, wage disbursements and tax refund processing services. The Corporate and Other segment primarily consists of eliminations of intersegment revenues and expenses, unallocated corporate expenses, depreciation and amortization, and other costs that are not considered when management evaluates segment performance. We do not evaluate performance or allocate resources based on segment asset data, and therefore such information is not presented.

The following tables present certain financial information for each of our reportable segments for the periods then ended:



	Three Months Ended March 31, 2018
	Account Services		Processing and Settlement Services		Corporate and Other			Total
	(In thousands)
Operating revenues	$	222,434	$	101,858	$	(9,294	)	$	314,998
Operating expenses	169,488		50,673		18,457			238,618
Operating income	$	52,946	$	51,185	$	(27,751	)	$	76,380



	Three Months Ended March 31, 2017
	Account Services		Processing and Settlement Services		Corporate and Other			Total
	(In thousands)
Operating revenues	$	167,693	$	93,710	$	(8,402	)	$	253,001
Operating expenses	126,677		45,103		19,845			191,625
Operating income	$	41,016	$	48,607	$	(28,247	)	$	61,376

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America, or GAAP. We consolidated our wholly-owned subsidiaries and eliminated all significant intercompany balances and transactions. We have also prepared the accompanying unaudited consolidated financial statements in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X and, consequently, they do not include all of the annual disclosures required by GAAP. Reference is made to our Annual Report on Form 10-K for the year ended December 31, 2017 for additional disclosures, including a summary of our significant accounting policies. There have been no material changes to our significant accounting policies during the three months ended March 31, 2018, other than the adoption of the accounting pronouncements discussed below. In our opinion, the accompanying unaudited consolidated financial statements contain all adjustments, consisting of normal and recurring items, except as otherwise noted, necessary for the fair presentation of our financial position, results of operations and cash flows for the interim periods presented.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently issued accounting pronouncements not yet adopted In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other ("ASU 2017-04"): Simplifying the Test for Goodwill Impairment, which simplifies the existing two-step guidance for goodwill impairment testing by eliminating the second step resulting in a write-down to goodwill equal to the initial amount of impairment determined in step one. The ASU is to be applied prospectively for reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. We are currently evaluating the impact of the provisions of ASU 2017-04 on our consolidated financial statements, however, we do not anticipate it will have a material impact upon adoption. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13") that requires financial assets measured at amortized cost be presented at the net amount expected to be collected. Credit losses on available-for-sale debt securities should be recorded through an allowance for credit losses limited by the amount that the fair value is less than amortized cost. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements. Note 2—Summary of Significant Accounting Policies (continued) In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASU 2016-02") in order to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet for those leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for leases with a term greater than 12 months. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those periods, using a modified retrospective approach and early adoption is permitted. We are currently in the process of evaluating the impact of ASU 2016-02 on our consolidated financial statements. Recently adopted accounting pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), and has since been modified through additional technical corrections since its original issuance (collectively ASC 606). ASU 2014-09 supersedes nearly all existing revenue recognition guidance under current GAAP. The core principle of ASU 2014-09, is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. The standard defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under previous GAAP. The standard allows companies to apply either a full retrospective approach, which requires applying the standard to each prior year reporting period presented, or a modified retrospective approach with a cumulative effect adjustment recognized upon adoption. We adopted the provisions of the standard on January 1, 2018 using the modified retrospective approach, which did not result in any cumulative adjustment to opening retained earnings nor did it have a material impact on our consolidated financial statements. The adoption of ASU 2014-09, however, requires expanded disclosures under the new guidance. See Note 3 - Revenues for further information and additional discussion around changes identified to our policies under the new accounting pronouncement. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). ASU 2016-01 revises the classification and measurement of investments in certain equity investments and the presentation of certain fair value changes for certain financial liabilities measured at fair value. ASU 2016-01 requires the change in fair value of many equity investments to be recognized in net income. We adopted the provisions of ASU 2016-01 on January 1, 2018, the result of which did not have any impact upon our consolidated financial statements. In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash ("ASU 2016-18"), to require that restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total cash amounts shown on the statement of cash flows. Consequently, transfers between cash and restricted cash will not be presented as a separate line item in the operating, investing or financing sections of the cash flow statement. The amendments should be applied retrospectively to each period presented. We adopted the provisions of ASU 2016-18 on January 1, 2018, the effect of which resulted in an immaterial reclassification in presentation on our statement of cash flows, but had no affect on our consolidated financial results. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"). Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act. The amendments in this ASU also require certain disclosures about stranded tax effects. We adopted the provisions of ASU 2018-02 as of December 31, 2017, the result of which did not have a material impact upon our consolidated financial statements.
Fair Value of Financial Instruments	Short-term Financial Instruments Our short-term financial instruments consist principally of unrestricted and restricted cash and cash equivalents, settlement assets and obligations, and obligations to customers. These financial instruments are short-term in nature, and, accordingly, we believe their carrying amounts approximate their fair values. Under the fair value hierarchy, these instruments are classified as Level 1. Investment Securities The fair values of investment securities have been derived using methodologies referenced in Note 2–Summary of Significant Accounting Policies to the Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2017. Under the fair value hierarchy, our investment securities are classified as Level 2. Loans We determined the fair values of loans by discounting both principal and interest cash flows expected to be collected using a discount rate commensurate with the risk that we believe a market participant would consider in determining fair value. Under the fair value hierarchy, our loans are classified as Level 3. Deposits The fair value of demand and interest checking deposits and savings deposits is the amount payable on demand at the reporting date. We determined the fair value of time deposits by discounting expected future cash flows using market-derived rates based on our market yields on certificates of deposit, by maturity, at the measurement date. Under the fair value hierarchy, our deposits are classified as Level 2. Contingent Consideration The fair value of contingent consideration obligations, such as the earn-outs associated with our acquisitions of TPG and UniRush, are estimated through valuation models designed to estimate the probability of such contingent payments based on various assumptions. Estimated payments are discounted using present value techniques to arrive at an estimated fair value. Our contingent consideration payable is classified as Level 3 because we use unobservable inputs to estimate fair value, including the probability of achieving certain earnings thresholds and appropriate discount rates. Changes in fair value of contingent consideration are recorded through operating expenses. Note Payable The fair value of our note payable is based on borrowing rates currently available to a market participant for loans with similar terms or maturity. The carrying amount of our note payable approximates fair value because the base interest rate charged varies with market conditions and the credit spread is commensurate with current market spreads for issuers of similar risk. The fair value of the note payable is classified as a Level 2 liability in the fair value hierarchy.

Revenues (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table disaggregates our revenues by the timing in which the revenue is recognized:



	Three Months Ended March 31, 2018
	Account Services		Processing and Settlement Services
Timing of revenue recognition	(In thousands)
Transferred at a point in time	$	136,526	$	100,235
Transferred over time	77,346		891
Operating revenues	$	213,872	$	101,126

Business Combination (Tables)

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

The following table summarizes the fair value of consideration transferred:



	Consideration
	(In thousands)
Cash, including proceeds from notes payable	$	142,154
Fair value of contingent consideration	21,500
Total consideration	$	163,654

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The allocation of the purchase price was as follows:



	February 28, 2017
	(In thousands)
Assets:
Cash and cash equivalents	$	656
Accounts receivable, net	5,745
Prepaid expenses and other assets	5,146
Property and equipment, net	4,233
Intangible assets	69,000
Goodwill	93,435
Total assets:	178,215

Liabilities:
Accounts payable	10,861
Other liabilities	3,700
Total liabilities:	14,561

Net assets acquired	$	163,654

Business Acquisition, Pro Forma Information

The pro forma results have been presented for comparative purposes only and are not indicative of what would have occurred had the UniRush acquisition been made as of January 1, 2017, or of any potential results which may occur in the future.



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Net revenues	$	314,998	$	272,286
Net income attributable to common stock	$	70,031	$	34,150
Basic earnings per common share	$	1.36	$	0.68
Diluted earnings per common share	$	1.29	$	0.65
Basic weighted-average common shares issued and outstanding	51,439		50,458
Diluted weighted-average common shares issued and outstanding	54,234		52,497

Investment Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Investment Securities, Available-for-sale

As of March 31, 2018 and December 31, 2017, the gross unrealized losses and fair values of available-for-sale investment securities that were in unrealized loss positions were as follows:



	Less than 12 months					12 months or more					Total fair value		Total unrealized loss
	Fair value		Unrealized loss			Fair value		Unrealized loss			Total fair value		Total unrealized loss
	(In thousands)
March 31, 2018
U.S. Treasury notes	$	2,290	$	(11	)	$	8,585	$	(26	)	$	10,875	$	(37	)
Agency securities	4,940		(1		)	—		—			4,940		(1		)
Agency mortgage-backed securities	52,155		(541		)	48,870		(1,082		)	101,025		(1,623		)
Municipal bonds	429		(10		)	160		(5		)	589		(15		)
Asset-backed securities	—		—			11,211		(105		)	11,211		(105		)
Total investment securities	$	59,814	$	(563	)	$	68,826	$	(1,218	)	$	128,640	$	(1,781	)

December 31, 2017
U.S. Treasury notes	$	4,588	$	(21	)	$	6,288	$	(25	)	$	10,876	$	(46	)
Agency mortgage-backed securities	62,683		(453		)	44,159		(602		)	106,842		(1,055		)
Municipal bonds	—		—			193		(7		)	193		(7		)
Asset-backed securities	2,134		(2		)	18,727		(89		)	20,861		(91		)
Total investment securities	$	69,405	$	(476	)	$	69,367	$	(723	)	$	138,772	$	(1,199	)

Our available-for-sale investment securities were as follows:



	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
	(In thousands)
March 31, 2018
Negotiable certificate of deposit	$	5,000	$	—	$	—		$	5,000
U.S. Treasury notes	10,912		—		(37		)	10,875
Agency securities	4,941		—		(1		)	4,940
Agency mortgage-backed securities	117,531		25		(1,623		)	115,933
Municipal bonds	604		—		(15		)	589
Asset-backed securities	11,316		—		(105		)	11,211
Total investment securities	$	150,304	$	25	$	(1,781	)	$	148,548

December 31, 2017
Corporate bonds	$	1,000	$	—	$	—		$	1,000
U.S. Treasury notes	10,921		—		(46		)	10,875
Agency mortgage-backed securities	121,037		52		(1,055		)	120,034
Municipal bonds	742		4		(7		)	739
Asset-backed securities	20,952		—		(91		)	20,861
Total investment securities	$	154,652	$	56	$	(1,199	)	$	153,509

Investments Classified by Contractual Maturity Date

As of March 31, 2018, the contractual maturities of our available-for-sale investment securities were as follows:



	Amortized cost		Fair value
	(In thousands)
Due in one year or less	$	15,912	$	15,875
Due after one year through five years	4,941		4,940
Due after five years through ten years	—		—
Due after ten years	604		589
Mortgage and asset-backed securities	128,847		127,144
Total investment securities	$	150,304	$	148,548

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Accounts Receivable

Accounts receivable, net consisted of the following:



	March 31, 2018			December 31, 2017
	(In thousands)
Overdrawn account balances due from cardholders	$	19,651		$	17,856
Reserve for uncollectible overdrawn accounts	(15,796		)	(14,471		)
Net overdrawn account balances due from cardholders	3,855			3,385

Trade receivables	7,479			4,231
Reserve for uncollectible trade receivables	(69		)	(3		)
Net trade receivables	7,410			4,228

Receivables due from card issuing banks	7,790			6,309
Fee advances	2,646			16,194
Other receivables	7,636			5,161
Accounts receivable, net	$	29,337		$	35,277

Activity in the reserve for uncollectible overdrawn accounts consisted of the following:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	14,471		$	11,932
Provision for uncollectible overdrawn accounts:
Fees	15,779			16,959
Purchase transactions	2,606			1,287
Charge-offs	(17,060		)	(17,945		)
Balance, end of period	$	15,796		$	12,233

Loans to Bank Customers (Tables)

3 Months Ended

Mar. 31, 2018

Loans and Leases Receivable Disclosure [Abstract]

Past Due Financing Receivables

The following table presents total outstanding loans, gross of the related allowance for loan losses, and a summary of the related payment status:



	30-59 Days Past Due			60-89 Days Past Due			90 Days or More Past Due			Total Past Due			Total Current or Less Than 30 Days Past Due			Total Outstanding
	(In thousands)
March 31, 2018
Residential	$	2		$	—		$	—		$	2		$	4,122		$	4,124
Commercial	—			—			—			—			278			278
Installment	—			—			—			—			1,084			1,084
Secured credit card	1,007			968			308			2,283			12,395			14,678
Total loans	$	1,009		$	968		$	308		$	2,285		$	17,879		$	20,164

Percentage of outstanding	5.0		%	4.8		%	1.5		%	11.3		%	88.7		%	100.0		%

December 31, 2017
Residential	$	—		$	—		$	—		$	—		$	3,554		$	3,554
Commercial	—			—			—			—			315			315
Installment	1			—			—			1			1,378			1,379
Secured credit card	1,223			593			424			2,240			11,373			13,613
Total loans	$	1,224		$	593		$	424		$	2,241		$	16,620		$	18,861

Percentage of outstanding	6.5		%	3.1		%	2.3		%	11.9		%	88.1		%	100.0		%



	March 31, 2018		December 31, 2017
	(In thousands)
Residential	$	485	$	502
Installment	187		191
Total loans	$	672	$	693

Financing Receivable Credit Quality Indicators

The table below presents the carrying value, gross of the related allowance for loan losses, of our loans within the primary credit quality indicators related to our loan portfolio:



	March 31, 2018				December 31, 2017
	Non-Classified		Classified		Non-Classified		Classified
	(In thousands)
Residential	$	3,634	$	490	$	3,038	$	516
Commercial	249		29		315		—
Installment	678		406		1,059		320
Secured credit card	14,678		—		13,613		—
Total loans	$	19,239	$	925	$	18,025	$	836

Troubled Debt Restructurings

The following table presents our impaired loans and loans that we modified as TDRs as of March 31, 2018 and December 31, 2017:



	March 31, 2018				December 31, 2017
	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
	(In thousands)
Residential	$	490	$	361	$	516	$	452
Commercial	29		28		—		—
Installment	223		101		262		120

Allowance for Loan Losses

Activity in the allowance for loan losses consisted of the following:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	291		$	277
Provision for loans	268			—
Loans charged off	(756		)	(5		)
Recoveries of loans previously charged off	648			9
Balance, end of period	$	451		$	281

Employee Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock Options and Restricted Stock Units activity

The following table summarizes restricted stock units with only service conditions granted under our 2010 Equity Incentive Plan:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Restricted stock units granted	63		115
Weighted-average grant-date fair value	$	61.26	$	27.44

Performance Shares [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock Options and Restricted Stock Units activity

The following table summarizes the performance-based restricted stock units granted under our 2010 Equity Incentive Plan:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Performance based restricted stock units granted ⁽¹⁾	444		287
Weighted-average grant-date fair value	$	39.50	$	33.29



(1	)	Performance awards granted also reflects the impact of any incremental shares awarded during the periods ended for performance periods completed. The grant date fair value for these awards are based on the grant price at the time of the initial award.

Deposits (Tables)

3 Months Ended

Mar. 31, 2018

Deposits [Abstract]

Summary of Deposits

Deposits are categorized as non-interest or interest-bearing deposits as follows:



	March 31, 2018		December 31, 2017
	(In thousands)
Non-interest bearing deposit accounts
GPR deposits	$	1,046,496	$	803,549
Other demand deposits	109,381		61,264
Total non-interest bearing deposit accounts	1,155,877		864,813
Interest-bearing deposit accounts
Checking accounts	117,527		140,555
Savings	10,148		10,523
GPR deposits	3,942		—
Time deposits, denominations greater than or equal to $100	4,435		4,752
Time deposits, denominations less than $100	1,343		1,537
Total interest-bearing deposit accounts	137,395		157,367
Total deposits	$	1,293,272	$	1,022,180

Contractual Maturities For Total Time Deposits

The scheduled contractual maturities for total time deposits are presented in the table below:



	March 31, 2018
	(In thousands)
Due in 2018	$	1,965
Due in 2019	1,030
Due in 2020	1,166
Due in 2021	820
Due in 2022	797
Thereafter	—
Total time deposits	$	5,778

Note Payable (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Debt

As of March 31, 2018 and December 31, 2017, our outstanding debt, net of deferred financing costs of $2.5 million and $2.9 million, respectively, consisted of the following:



	March 31, 2018		December 31, 2017
	(In thousands)
Term facility	$	74,384	$	79,611
Revolving facility	—		—
Total notes payable	$	74,384	$	79,611

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Reconciliation of Federal Tax Rate and Actual Income Tax Expense

The sources and tax effects of the differences are as follows:



	Three Months Ended March 31,
	2018		2017
U.S. federal statutory tax rate	21.0	%	35.0	%
State income taxes, net of federal tax benefit	0.9		1.4
General business credits	(0.6	)	(1.0	)
Employee stock-based compensation	(10.0	)	(1.0	)
Other	1.6		0.5
Effective tax rate	12.9	%	34.9	%

Summary of Income Tax Contingencies

The reconciliation of the beginning unrecognized tax benefits balance to the ending balance is as follows:

Note 11—Income Taxes (continued)



	Three Months Ended March 31,
	2018		2017
	(In thousands)
Beginning balance	$	5,560	$	7,314
Increases related to positions taken during prior years	—		—
Increases related to positions taken during the current year	1,099		1,038
Decreases related to positions settled with tax authorities	—		—
Decreases as a result of a lapse of applicable statute of limitations	—		—
Ending balance	$	6,659	$	8,352

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$	6,659	$	8,352

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Class of Treasury Stock

The following table summarizes our ASR activity for the prior year comparative period:



	Purchase Period End Date	Number of Shares (In thousands)	Average Repurchase Price Per Share		ASR Amount (In thousands)
March 2017 ASR	November 2017	1,326	$	38.64	$	50,000	(1)



(1)	We elected to cash settle approximately $2.0 million worth of shares owed back to the counterparty under our March 2017 accelerated share repurchase agreement.

Earnings per Common Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Common Share

The calculation of basic and diluted EPS was as follows:



	Three Months Ended March 31,
	2018		2017
	(In thousands, except per share data)
Basic earnings per Class A common share
Numerator:
Net income	$	70,031	$	40,754
Denominator:
Weighted-average Class A shares issued and outstanding	51,439		50,458
Basic earnings per Class A common share	$	1.36	$	0.81

Diluted earnings per Class A common share
Numerator:
Net income	$	70,031	$	40,754
Denominator:
Weighted-average Class A shares issued and outstanding	51,439		50,458
Dilutive potential common shares:
Stock options	535		603
Restricted stock units	1,337		1,186
Performance based restricted stock units	915		231
Employee stock purchase plan	8		19
Diluted weighted-average Class A shares issued and outstanding	54,234		52,497
Diluted earnings per Class A common share	$	1.29	$	0.78

Antidilutive Shares

The following table shows the weighted-average number of shares excluded from the diluted EPS calculation:



	Three Months Ended March 31,
	2018	2017
	(In thousands)
Class A common stock
Options to purchase Class A common stock	—	55
Performance based restricted stock units	22	—
Total options and restricted stock units	22	55

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Assets and Liabilities Carried at Fair Value on a Recurring Basis

Note 14—Fair Value Measurements (continued)

As of March 31, 2018 and December 31, 2017, our assets and liabilities carried at fair value on a recurring basis were as follows:



	Level 1		Level 2		Level 3		Total Fair Value
March 31, 2018	(In thousands)
Assets
Negotiable certificate of deposit	$	—	$	5,000	$	—	$	5,000
U.S. Treasury notes	—		10,875		—		10,875
Agency securities	—		4,940		—		4,940
Agency mortgage-backed securities	—		115,933		—		115,933
Municipal bonds	—		589		—		589
Asset-backed securities	—		11,211		—		11,211
Total assets	$	—	$	148,548	$	—	$	148,548

Liabilities
Contingent consideration	$	—	$	—	$	17,156	$	17,156

December 31, 2017
Assets
Corporate bonds	$	—	$	1,000	$	—	$	1,000
U.S. Treasury notes	—		10,875		—		10,875
Agency mortgage-backed securities	—		120,034		—		120,034
Municipal bonds	—		739		—		739
Asset-backed securities	—		20,861		—		20,861
Total assets	$	—	$	153,509	$	—	$	153,509

Liabilities
Contingent consideration	$	—	$	—	$	17,358	$	17,358

Change in Contingent Consideration Payable

The following table presents changes in our contingent consideration payable for the three months ended March 31, 2018 and 2017, which is categorized in Level 3 of the fair value hierarchy:



	Three Months Ended March 31,
	2018			2017
	(In thousands)
Balance, beginning of period	$	17,358		$	8,634
Issuance	—			18,000
Payments of contingent consideration	(202		)	(192		)
Balance, end of period	$	17,156		$	26,442

Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value of Assets Not Carried at Fair Value



	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Financial Assets
Loans to bank customers, net of allowance	$	19,713	$	19,074	$	18,570	$	18,102

Financial Liabilities
Deposits	$	1,293,272	$	1,293,215	$	1,022,180	$	1,022,102
Note payable	$	74,384	$	74,384	$	79,611	$	79,611

Significant Retailer Concentrations (Tables)

3 Months Ended

Mar. 31, 2018

Risks and Uncertainties [Abstract]

Schedule of Customer Concentrations

Revenues derived from our products sold at retail distributors constituting greater than 10% of our total operating revenues were as follows:



	Three Months Ended March 31,
	2018	2017
Walmart	33%	37%

Settlement assets derived from our products sold at retail distributors constituting greater than 10% of the settlement assets outstanding on our consolidated balance sheets were as follows:



	March 31, 2018	December 31, 2017
Walmart	32%	33%

Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting

The following tables present certain financial information for each of our reportable segments for the periods then ended:



	Three Months Ended March 31, 2018
	Account Services		Processing and Settlement Services		Corporate and Other			Total
	(In thousands)
Operating revenues	$	222,434	$	101,858	$	(9,294	)	$	314,998
Operating expenses	169,488		50,673		18,457			238,618
Operating income	$	52,946	$	51,185	$	(27,751	)	$	76,380



	Three Months Ended March 31, 2017
	Account Services		Processing and Settlement Services		Corporate and Other			Total
	(In thousands)
Operating revenues	$	167,693	$	93,710	$	(8,402	)	$	253,001
Operating expenses	126,677		45,103		19,845			191,625
Operating income	$	41,016	$	48,607	$	(28,247	)	$	61,376

Organization (Details) store in Millions	3 Months Ended
Organization (Details) store in Millions	Mar. 31, 2018 customer store
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of stores \| store	0.1
Number of customers served (more than) \| customer	25,000

Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
Revenues (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer [Abstract]
Incentive payments	$ 1,800	$ 1,100
GPR, average useful life	5 months
Gift Card, average useful life	6 months
Disaggregation of Revenue [Line Items]
Contract with customer, liability	$ 18,900
Operating revenues	314,998	253,001
Account Services Segment [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	213,872
Account Services Segment [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	77,346
Account Services Segment [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	$ 136,526
Processing and Settlement Services Segment [Member]
Disaggregation of Revenue [Line Items]
Operating revenues		101,126
Processing and Settlement Services Segment [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Operating revenues		891
Processing and Settlement Services Segment [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Operating revenues		$ 100,235

Business Combination (Details) - USD ($) $ in Thousands		3 Months Ended
Business Combination (Details) - USD ($) $ in Thousands	Feb. 28, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Note payable, carrying value		$ 74,384		$ 79,611
Liabilities:
Operating revenues		314,998	$ 253,001
Net income		$ 70,031	$ 40,754
UniRush, LLC [Member]
Business Combination, Consideration Transferred [Abstract]
Cash, including proceeds from notes payable	$ 142,154
Fair value of contingent consideration	21,500
Total consideration	163,654
Contingent consideration, earn-out payable	$ 20,000
Contingent consideration, earn-out period	5 years
Assets:
Cash and cash equivalents	$ 656
Accounts receivable, net	5,745
Prepaid expenses and other assets	5,146
Property and equipment, net	4,233
Intangible assets	69,000
Goodwill	93,435
Total assets:	178,215
Liabilities:
Accounts payable	10,861
Other liabilities	3,700
Total liabilities:	14,561
Net assets acquired	163,654
Subordinated Debt [Member] \| UniRush, LLC [Member]
Business Acquisition [Line Items]
Cash raised from debt	20,000
Term Facility [Member] \| Line of Credit [Member] \| UniRush, LLC [Member]
Business Acquisition [Line Items]
Note payable, carrying value	95,000
Customer Relationships [Member] \| UniRush, LLC [Member]
Liabilities:
Finite-lived intangibles	58,500
Trade Names [Member] \| UniRush, LLC [Member]
Liabilities:
Finite-lived intangibles	$ 5,500
Acquired finite-lived intangible assets, weighted average useful life		15 years
Minimum [Member] \| Customer Relationships [Member] \| UniRush, LLC [Member]
Liabilities:
Acquired finite-lived intangible assets, weighted average useful life		5 years
Maximum [Member] \| Customer Relationships [Member] \| UniRush, LLC [Member]
Liabilities:
Acquired finite-lived intangible assets, weighted average useful life		10 years

Business Combination Pro Forma (Details) - UniRush, LLC [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Net revenues	$ 314,998	$ 272,286
Net income attributable to common stock	$ 70,031	$ 34,150
Common Class A [Member]
Business Acquisition [Line Items]
Earnings per share, basic (in dollars per share)	$ 1.36	$ 0.68
Earnings per share, diluted (in dollars per share)	$ 1.29	$ 0.65
Basic weighted-average common shares issued and outstanding	51,439	50,458
Diluted weighted-average common shares issued and outstanding	54,234	52,497

Investment Securities Gross Gains and Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	$ 150,304	$ 154,652
Gross unrealized gains	25	56
Gross unrealized losses	(1,781)	(1,199)
Fair value	148,548	153,509
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	5,000
Gross unrealized gains	0
Gross unrealized losses	0
Fair value	5,000
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis		1,000
Gross unrealized gains		0
Gross unrealized losses		0
Fair value		1,000
US treasury notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	10,912	10,921
Gross unrealized gains	0	0
Gross unrealized losses	(37)	(46)
Fair value	10,875	10,875
Agencies securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	4,941
Gross unrealized gains	0
Gross unrealized losses	(1)
Fair value	4,940
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	117,531	121,037
Gross unrealized gains	25	52
Gross unrealized losses	(1,623)	(1,055)
Fair value	115,933	120,034
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	604	742
Gross unrealized gains	0	4
Gross unrealized losses	(15)	(7)
Fair value	589	739
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost basis	11,316	20,952
Gross unrealized gains	0	0
Gross unrealized losses	(105)	(91)
Fair value	$ 11,211	$ 20,861

Investment Securities Continuous Unrealized Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	$ 59,814		$ 69,405
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(563)		(476)
Fair value, 12 months or more	68,826		69,367
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,218)		(723)
Total fair value	128,640		138,772
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	(1,781)		(1,199)
Other than temporary impairment losses	0	$ 0
US treasury notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	2,290		4,588
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11)		(21)
Fair value, 12 months or more	8,585		6,288
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(26)		(25)
Total fair value	10,875		10,876
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	(37)		(46)
Agencies securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	4,940
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)
Fair value, 12 months or more	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Total fair value	4,940
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	(1)
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	52,155		62,683
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(541)		(453)
Fair value, 12 months or more	48,870		44,159
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,082)		(602)
Total fair value	101,025		106,842
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	(1,623)		(1,055)
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	429		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(10)		0
Fair value, 12 months or more	160		193
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5)		(7)
Total fair value	589		193
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	(15)		(7)
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	0		2,134
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0		(2)
Fair value, 12 months or more	11,211		18,727
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(105)		(89)
Total fair value	11,211		20,861
Available-for-sale securities, continuous unrealized loss position,aggregate loss, accumulated in investments	$ (105)		$ (91)

Investment Securities Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized cost
Due in one year or less	$ 15,912
Due after one year through five years	4,941
Due after five years through ten years	0
Due after ten years	604
Mortgage and asset-backed securities	128,847
Total investment securities	150,304
Fair value
Due in one year or less	15,875
Due after one year through five years	4,940
Due after five years through ten years	0
Due after ten years	589
Mortgage and asset-backed securities	127,144
Fair value	$ 148,548	$ 153,509

Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reserve for uncollectible overdrawn accounts	$ (15,796)		$ (12,233)
Accounts receivable current and noncurrent, net	29,337	$ 35,277
Receivables due from card issuing banks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	7,790	6,309
Overdrawn Account Balances due from Cardholders [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	19,651	17,856
Reserve for uncollectible overdrawn accounts	(15,796)	(14,471)		$ (11,932)
Accounts receivable current and noncurrent, net	3,855	3,385
Trade Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	7,479	4,231
Reserve for uncollectible overdrawn accounts	(69)	(3)
Accounts receivable current and noncurrent, net	7,410	4,228
Fee advances [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	2,646	16,194
Other receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 7,636	$ 5,161

Accounts Receivable Reserve For Uncollectible Overdrawn Accounts Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Uncollectible Overdrawn Accounts [Roll Forward]
Provision for uncollectible accounts	$ 18,385	$ 18,246
Charge-offs	(17,060)	(17,945)
Balance, end of period	15,796	12,233
Fees [Member]
Uncollectible Overdrawn Accounts [Roll Forward]
Provision for uncollectible accounts	15,779	16,959
Purchase transactions [Member]
Uncollectible Overdrawn Accounts [Roll Forward]
Provision for uncollectible accounts	2,606	$ 1,287
Trade Receivables [Member]
Uncollectible Overdrawn Accounts [Roll Forward]
Balance, beginning of period	3
Balance, end of period	$ 69

Loans to Bank Customers Loan Summary (Details) - USD ($) $ in Thousands	1 Months Ended
	Aug. 31, 2017	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		$ 2,285	$ 2,241
Total outstanding loans to bank customers		$ 20,164	$ 18,861
Percentage of outstanding loans		100.00%	100.00%
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		$ 1,009	$ 1,224
Percentage of outstanding loans		5.00%	6.50%
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		$ 968	$ 593
Percentage of outstanding loans		4.80%	3.10%
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		$ 308	$ 424
Percentage of outstanding loans		1.50%	2.30%
Financing Receivables, Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of outstanding loans		11.30%	11.90%
Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, current		$ 17,879	$ 16,620
Percentage of outstanding loans		88.70%	88.10%
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		$ 2	$ 0
Total outstanding loans to bank customers		4,124	3,554
Residential Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		2	0
Residential Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Residential Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Residential Portfolio Segment [Member] \| Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, current		4,122	3,554
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Total outstanding loans to bank customers		278	315
Commercial Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Commercial Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Commercial Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Commercial Portfolio Segment [Member] \| Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, current		278	315
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	1
Total outstanding loans to bank customers		1,084	1,379
Consumer Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	1
Consumer Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Consumer Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		0	0
Consumer Portfolio Segment [Member] \| Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, current		1,084	1,378
Credit Card Receivable [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		1,007	1,223
Credit Card Receivable [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		968	593
Credit Card Receivable [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		308	424
Credit Card Receivable [Member] \| Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more			11,373
Past due, current		12,395
Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more		2,283
Total outstanding loans to bank customers	$ 8,200
Credit Card Receivable [Member] \| Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due 30 days or more			2,240
Total outstanding loans to bank customers		$ 14,678	$ 13,613
Collateral Pledged [Member] \| Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable acquired	$ 8,100

Loans to Bank Customers Nonperforming Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Nonperforming Loans [Line Items]
Nonperforming loans	$ 672	$ 693
Residential Portfolio Segment [Member]
Nonperforming Loans [Line Items]
Nonperforming loans	485	502
Installment Portfolio Segment [Member]
Nonperforming Loans [Line Items]
Nonperforming loans	$ 187	$ 191

Loans to Bank Customers Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	$ 19,713	$ 18,570
Non-Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	19,239	18,025
Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	925	836
Residential Portfolio Segment [Member] \| Non-Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	3,634	3,038
Residential Portfolio Segment [Member] \| Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	490	516
Commercial Portfolio Segment [Member] \| Non-Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	249	315
Commercial Portfolio Segment [Member] \| Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	29	0
Installment Portfolio Segment [Member] \| Non-Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	678	1,059
Installment Portfolio Segment [Member] \| Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	406	320
Credit Card Receivable [Member] \| Non-Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	14,678	13,613
Credit Card Receivable [Member] \| Classified [Member]
Outstanding Loans [Line Items]
Loans to bank customers, carrying amount	$ 0	$ 0

Loans to Bank Customers Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, unpaid principal balance	$ 490	$ 516
Financing receivable, modifications, recorded investment	361	452
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, unpaid principal balance	29	0
Financing receivable, modifications, recorded investment	28	0
Installment Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, unpaid principal balance	223	262
Financing receivable, modifications, recorded investment	$ 101	$ 120

Loans to Bank Customers Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, beginning of period	$ 291	$ 277
Provision (benefit) for loans	268	0
Loans charged off	(756)	(5)
Recoveries of loans previously charged off	648	9
Allowance for loan losses, end of period	$ 451	$ 281

Employee Stock-Based Compensation Share-based Compensation Equity Granted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock-based compensation	$ 9,360	$ 6,534
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted	63	115
Weighted-average grant-date fair value	$ 61.26	$ 27.44
2010 Equity Incentive Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	4 years
Performance based restricted stock units granted (1)	444	287
Weighted-average grant-date fair value	$ 39.50	$ 33.29
2010 Equity Incentive Plan- Executive Employees [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period for recognition (in years)	3 years
Minimum [Member] \| 2010 Equity Incentive Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target share percentage for shares issued	0.00%
Maximum [Member] \| 2010 Equity Incentive Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target share percentage for shares issued	150.00%

Deposits Summary of Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deposits [Abstract]
GPR deposits	$ 1,046,496	$ 803,549
Other demand deposits	109,381	61,264
Total non-interest bearing deposit accounts	1,155,877	864,813
Checking accounts	117,527	140,555
Savings	10,148	10,523
GPR deposits	3,942	0
Time deposits, denominations greater than or equal to $100	4,435	4,752
Time deposits, denominations less than $100	1,343	1,537
Total interest-bearing deposit accounts	137,395	157,367
Total deposits	$ 1,293,272	$ 1,022,180

Deposits Contractual Maturities (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Time Deposits, Fiscal Year Maturity [Abstract]
Due in 2018	$ 1,965
Due in 2019	1,030
Due in 2020	1,166
Due in 2021	820
Due in 2022	797
Thereafter	0
Total time deposits	$ 5,778

Note Payable Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
Note Payable Narrative (Details) - USD ($)	Oct. 31, 2014	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Debt Instrument [Line Items]
Deferred financing costs		$ 2,500,000		$ 2,900,000
Repayments of notes payable		$ 5,625,000	$ 25,625,000
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 225,000,000.0
Potential maximum borrowing capacity increase	50,000,000.0
Effective interest rate (percent)		4.38%
Interest expense		$ 900,000	1,200,000
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member] \| Base Rate, Condition One [Member]
Debt Instrument [Line Items]
Spread on interest rate (percent)		0.50%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member] \| Base Rate, Condition Two [Member]
Debt Instrument [Line Items]
Spread on interest rate (percent)		1.00%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Description of variable rate basis		one-month LIBOR
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Minimum [Member] \| Line of Credit [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)		2.50%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Minimum [Member] \| Line of Credit [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)		1.50%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Maximum [Member] \| Line of Credit [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)		3.00%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Maximum [Member] \| Line of Credit [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)		2.00%
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Revolving Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75,000,000.0
Debt term	5 years
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Term Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 150,000,000.0
Debt term	5 years
Quarterly principal payment		$ 5,600,000
Repayments of notes payable		$ 5,600,000	$ 5,600,000

Note Payable Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total notes payable	$ 74,384	$ 79,611
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Total notes payable	74,384	79,611
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member] \| Term Facility [Member]
Debt Instrument [Line Items]
Total notes payable	74,384	79,611
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] \| Line of Credit [Member] \| Revolving Facility [Member]
Debt Instrument [Line Items]
Total notes payable	$ 0	$ 0

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Income Taxes Effective Tax Rate Reconciliation (Details)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory tax rate	21.00%	35.00%
State income taxes, net of federal tax benefit	0.90%	1.40%
General business credits	(0.60%)	(1.00%)
Employee stock-based compensation	(10.00%)	(1.00%)
Other	1.60%	0.50%
Effective tax rate	12.90%	34.90%

Income Taxes Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Income Taxes Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Tax Cuts And Jobs Act Of 2017, Provisional income tax benefit			$ (6,300)
U.S. federal statutory tax rate (percent)	21.00%	35.00%
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$ 6,659	$ 8,352	$ 5,600
Unrecognized tax benefits, income tax penalties and interest accrued	1,300	$ 1,200
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	37,700
State Tax [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	33,700
State Tax [Member] \| Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	9,800
State Tax [Member] \| Tax Year 2026 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,200

Income Taxes Rollforward of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 5,560	$ 7,314
Increases related to positions taken during prior years	0	0
Increases related to positions taken during the current year	1,099	1,038
Decreases related to positions settled with tax authorities	0	0
Decreases as a result of a lapse of applicable statute of limitations	0	0
Ending balance	6,659	8,352
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$ 6,659	$ 8,352	$ 5,600

Stockholders' Equity (Details)	3 Months Ended
Stockholders' Equity (Details)	Mar. 31, 2018 transaction	Nov. 30, 2017 USD ($)	Jun. 30, 2015 USD ($)
Common Class A [Member]
Class of Stock [Line Items]
Share repurchase program authorized amount			$ 150,000,000
ASR transaction accounted for as a treasury stock repurchase		$ 150,000,000
Accelerated Share Repurchase Agreement [Member]
Class of Stock [Line Items]
Stock repurchase program, number of transactions \| transaction	2

Stockholders' Equity ASR Activity (Details) - Common Class A [Member] - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2018	Nov. 30, 2017
Equity, Class of Treasury Stock [Line Items]
Treasury stock, value			$ 150,000,000
March 2017 ASR [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares acquired	1,300	1,326
Treasury stock acquired, average cost per share (in USD per share)		$ 38.64
Treasury stock, value		$ 50,000,000
Treasury stock, cash settled amount		$ 2,000,000

Earnings per Common Share Basic Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 70,031	$ 40,754
Weighted-average Class A shares issued and outstanding	51,439	50,458
Basic earnings per Class A common share, in usd per share	$ 1.36	$ 0.81
Diluted weighted-average Class A shares issued and outstanding	54,234	52,497
Diluted earnings per Class A common share, in usd per share	$ 1.29	$ 0.78
Stock Options [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares	535	603
Restricted Stock Units (RSUs) [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares	1,337	1,186
Performance Shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares	915	231
Employee Stock Purchase Plan [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive potential common shares	8	19

Earnings per Common Share Antidilutive Shares (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stock Options [Member]
Antidilutive Shares [Line Items]
Antidilutive shares	0	55
Performance Shares [Member]
Antidilutive Shares [Line Items]
Antidilutive shares	22	0
Common Class A [Member]
Antidilutive Shares [Line Items]
Antidilutive shares	22	55

Fair Value Measurements Contingent Consideration Payable (Details) - Contingent Consideration [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 17,358	$ 8,634
Issuance	0	18,000
Payments of contingent consideration	(202)	(192)
Balance, end of period	$ 17,156	$ 26,442

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Loans to bank customers, carrying amount	$ 19,713	$ 18,570
Loans to bank customers, fair value	19,074	18,102
Deposits, carrying value	1,293,272	1,022,180
Deposits, fair value	1,293,215	1,022,102
Note payable, carrying value	74,384	79,611
Note payable, fair value	$ 74,384	$ 79,611

- Definition

+ References + Details

Commitments and Contingencies Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)	Jun. 30, 2016 complaint	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual, provision	$ 26,000
Restricted cash	86,608		$ 90,852	$ 20,057
Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision	26,000
Limited Disruption in Service [Member] \| Migration of Third-Party Card Processor [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, new claims filed, number \| complaint		2
Limited Disruption in Service [Member] \| Migration of Third-Party Card Processor [Member] \| Other Current Liabilities [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual	$ 2,300

Significant Retailer Concentrations (Details) - Customer Concentration Risk [Member] - Walmart [Member]	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Total Operating Revenues [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	33.00%	37.00%
Settlement Assets [Member]
Concentration Risk [Line Items]
Concentration risk, percentage (balance sheet disclosures)	32.00%		33.00%

Segment Information (Details) $ in Thousands	3 Months Ended
Segment Information (Details) $ in Thousands	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment	2
Segment Reporting Information [Line Items]
Operating revenues	$ 314,998	$ 253,001
Operating expenses	238,618	191,625
Operating income	76,380	61,376
Account Services Segment [Member]
Segment Reporting Information [Line Items]
Operating revenues	213,872
Processing and Settlement Services Segment [Member]
Segment Reporting Information [Line Items]
Operating revenues		101,126
Operating Segments [Member] \| Account Services Segment [Member]
Segment Reporting Information [Line Items]
Operating revenues	222,434	167,693
Operating expenses	169,488	126,677
Operating income	52,946	41,016
Operating Segments [Member] \| Processing and Settlement Services Segment [Member]
Segment Reporting Information [Line Items]
Operating revenues	101,858	93,710
Operating expenses	50,673	45,103
Operating income	51,185	48,607
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating revenues	(9,294)	(8,402)
Operating expenses	18,457	19,845
Operating income	$ (27,751)	$ (28,247)

Fair Value Measurements Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 148,548	$ 153,509
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	5,000
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value		1,000
US treasury notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	10,875	10,875
Agencies securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4,940
Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	589	739
Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	11,211	20,861
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	148,548	153,509
Contingent consideration, fair value	17,156	17,358
Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Contingent consideration, fair value	0	0
Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	148,548	153,509
Contingent consideration, fair value	0	0
Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Contingent consideration, fair value	17,156	17,358
Recurring [Member] \| Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	5,000
Recurring [Member] \| Certificates of Deposit [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0
Recurring [Member] \| Certificates of Deposit [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	5,000
Recurring [Member] \| Certificates of Deposit [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0
Recurring [Member] \| Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value		1,000
Recurring [Member] \| Corporate bonds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value		0
Recurring [Member] \| Corporate bonds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value		1,000
Recurring [Member] \| Corporate bonds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value		0
Recurring [Member] \| US treasury notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	10,875	10,875
Recurring [Member] \| US treasury notes [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| US treasury notes [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	10,875	10,875
Recurring [Member] \| US treasury notes [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Agencies securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4,940
Recurring [Member] \| Agencies securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0
Recurring [Member] \| Agencies securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4,940
Recurring [Member] \| Agencies securities [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0
Recurring [Member] \| Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	115,933	120,034
Recurring [Member] \| Mortgage-backed securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Mortgage-backed securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	115,933	120,034
Recurring [Member] \| Mortgage-backed securities [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	589	739
Recurring [Member] \| Municipal bonds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Municipal bonds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	589	739
Recurring [Member] \| Municipal bonds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	11,211	20,861
Recurring [Member] \| Asset-backed securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Recurring [Member] \| Asset-backed securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	11,211	20,861
Recurring [Member] \| Asset-backed securities [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 0	$ 0