Earnings per Common Share [Abstract] Earnings per Common Share [Abstract] Antidilutive Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Related Party Transactions, by Related Party [Axis] Related Party Transactions, by Related Party [Axis] Related Party [Domain] Related Party [Domain] Chief Executive Officer [Member] Chief Executive Officer [Member] Executive Officer [Member] Executive Officer [Member] Chief Financial Officer [Member] Chief Financial Officer [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related party receivables or payables Related Party Transaction, Due from (to) Related Party Related party repayments Related Party Repayments Related party repayments. Loan amounts Related Party Transaction, Amounts of Transaction Number of installments Number of Installments Number of installments. Interest rate Related Party Transaction, Rate Collateral for officer loans Collateral for Officer Loans The number of shares that collateralized a loan given to an officer of the company. Loans, outstanding balance Due from Related Parties Interest recorded as additional paid-in-capital Related Party Transaction, Revenues from Transactions with Related Party Stockholders' Equity Attributable to Parent [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] Comprehensive Income [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Net income Net Income (Loss) Attributable to Parent Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Tax Impact of Other Comprehensive Income Items [Abstract] Other Comprehensive Income (Loss), Tax [Abstract] Unrealized gains on investment securities available-for-sale, tax impact Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A common stock [Member] Common Class A [Member] Class B common stock [Member] Common Class B [Member] Common Stock [Member] Common Stock [Member] Preferred Stock [Member] Preferred Stock [Member] Series A preferred stock [Member] Nonredeemable Convertible Preferred Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Shares authorized Common Stock, Shares Authorized Shares authorized Preferred Stock, Shares Authorized Share exchange Conversion of Stock, Shares Converted Shares issued Preferred Stock, Shares Issued Shares outstanding Preferred Stock, Shares Outstanding Upon liquidation, the amount per share distributed before other classes of stock Preferred Stock, Redemption Price Per Share Conversion, criteria 2 Series A Conversion, Criteria 2 Series A Preferred Stock converts to Class A Common Stock if the transferee acquired a specified percentage of any class of voting shares in a private sale or transfer. Conversion, criteria 3 Series A Conversion, Criteria 3 Series A Preferred Stock converts to Class A Common Stock if the transferee owns or acquires more than this percentage of the voting shares. Preferred stock, shares issued upon conversion Convertible Preferred Stock, Shares Issued upon Conversion Votes Per Share Votes Per Share Votes Per Share Voting threshold Voting Threshold The threshold that if exceeded by a single holder, or group of affiliated holders, results in reduced voting power. Reduced voting power Reduced Voting Power The percentage voting power resulting if a single holder, or group of affiliated holders, exceed the voting threshold. Conversion, criteria 3 Class B Conversion, Criteria 3 The threshold of class B common shares to total shares of common shares outstanding whereby all of the class B common shares convert to class A common shares. Significant Customer Concentrations [Abstract] Significant Customer Concentrations [Abstract] Concentration Risk [Table] Concentration Risk [Table] Concentration Risk by Type [Axis] Concentration Risk by Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Concentration Risk by Benchmark [Axis] Concentration Risk by Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Total Operating Revenues [Member] Total Operating Revenues [Member] Total operating revenues. Total Operating Revenues, Excluding Stock-Based Retailer Incentive Compensation [Member] Total Operating Revenues, Excluding Stock-Based Retailer Incentive Compensation [Member] Total Operating Revenues, Excluding Stock-Based Retailer Incentive Compensation [Member] GPR Cards Activated (in units) [Member] GPR Cards Activated (in units) [Member] GPR Cards Activated (in units) [Member] Sales of Cash Transfer Products (in units) [Member] Sales of Cash Transfer Products [Member] Sales of Cash Transfer Products [Member] Settlement Assets [Member] Settlement Assets [Member] Settlement Assets [Member] Distributors, by Name [Axis] Distributors, by Name [Axis] Distributors, by name. Distributors, by Name [Domain] Distributors, by Name [Domain] Distributors, by Name [Domain] Walmart [Member] Walmart [Member] Walmart. Three Other Largest Retailer Distributors, as a Group [Member] Three Other Largest Retailer Distributors, as a Group [Member] Three other largest retailer distributors, as a group. Four Largest Retailers Distributors [Member] Four Largest Retailers Distributors [Member] Four Largest Retailers Distributors [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration risk, percentage Concentration Risk, Percentage Accounts Receivable [Abstract] Accounts Receivable [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable by Industry of Counterparty, Type [Axis] Accounts, Notes, Loans and Financing Receivable by Industry of Counterparty, Type [Axis] Industry of Counterparty [Domain] Industry of Counterparty [Domain] Receivables due from card issuing banks [Member] Receivables Due From Card Issuing Banks [Member] Receivables from card issuing banks primarily represent revenue-related funds collected by the card issuing banks from our retail distributors, merchant banks and cardholders that have yet to be remitted to us. These receivables are generally collected within a short period of time based on remittance terms in our agreements with the card issuing banks. Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Receivable Type [Domain] Receivable Type [Domain] Account balances due from cardholders [Member] Credit Card Receivable [Member] Trade receivables [Member] Trade Accounts Receivable [Member] Other receivables [Member] Other Receivables [Member] Balance represents other receivables. Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Receivable, Gross Accounts Receivable, Gross Allowance for Doubtful Accounts Receivable Allowance for Doubtful Accounts Receivable Accounts Receivable, Net Accounts Receivable, Net Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Leased Space by Location [Axis] Leased Space by Location [Axis] Leased space by location. Leased Space by Location [Domain] Leased Space by Location [Domain] Leased space by location Pasadena, CA [Member] Pasadena, CA [Member] Pasadena, CA Monrovia, CA [Member] Monrovia, CA [Member] Monrovia, CA Leased Space by Expiration [Axis] Leased Space by Expiration [Axis] Leased space by expiration. Leased Space by Expiration [Domain] Leased Space by Expiration [Domain] Leased space by expiration. September 2012 [Member] September 2012 [Member] Leased space expiring in September 2012. December 2012 [Member] December 2012 [Member] Leased space expiring in December 2012. December 2013 [Member] December 2013 [Member] Leased space expiring in December 2013. Operating Leases [Line Items] Operating Leased Assets [Line Items] Total rent expense Operating Leases, Rent Expense, Net Leased space, square footage Leased space, square footage The square footage of leased space. Lease term (in years) Lease term (in years) Lease term, in years. Reserve for uncollectibe overdrawn accounts [Member] Uncollectible Overdrawn Accounts [Roll Forward] Movement in Valuation Allowances and Reserves [Roll Forward] Balance, beginning of period Fees Fees Fees consist of the expense associated with the charge of a monthly maintenance fee when the account has become inactive or overdrawn. Purchase Transactions Purchase Transactions Purchase transactions consist of transactions we honor in excess of a cardholder’s account balance. Charge-offs Charge-offs Recoveries of amounts previously reserved for. Balance, end of period Loans [Abstract] Loans [Abstract] Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Walmart [Axis] Walmart [Axis] Walmart [Axis] Walmart [Domain] Walmart [Domain] Walmart. Shares issued Common Stock, Shares, Issued Walmart repurchase price Walmart Repurchase Price The repurchase price, per share, of the unvested Walmart shares. Shares, Monthly Vesting, Amount Shares, Monthly Vesting, Amount The number of outstanding shares that vest each month. Term for repurchase agreement Term For Repurchase Agreement Term For Repurchase Agreement Unvested Walmart shares Unvested Walmart Shares The number of unvested shares held by Walmart. Selected Quarterly Financial Information [Abstract] Total operating revenues Revenues Total operating expenses Operating Expenses Operating income Operating Income (Loss) Interest income, net Interest Income (Expense), Net Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Domestic Income tax expense Income Tax Expense (Benefit) Net income Basic earnings per common share Earnings Per Share, Basic Diluted earnings per common share Earnings Per Share, Diluted Organization [Abstract] Organization [Abstract] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Income Taxes [Abstract] Income Taxes [Abstract] U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes Non-deductible offering costs Effective Income Tax Rate Reconciliation, Nondeductible Expense, Offering Costs The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to nondeductible offering costs under enacted tax laws. Change in tax state apportionment method Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate Other Effective Income Tax Rate Reconciliation, Other Adjustments Effective tax rate Effective Income Tax Rate, Continuing Operations Effective Tax Rate Excluding Certain Discrete Items Effective Tax Rate Excluding Certain Discrete Items Effective tax rate excluding certain discrete items. Regulatory Requirements [Abstract] Regulatory Requirements [Abstract] Capital Amounts and Ratios [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Carrying value Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Loans to bank customers Loans and Leases Receivable, Net Reported Amount Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Minimum Anticipated Sales Price To Request Form S-3 Registration Minimum Anticipated Sales Price To Request Form S-3 Registration Certain holders have the right to request that their shares of common stock be registered in a Form S-3 registration statement so long as certain conditions are satisfied and the anticipated aggregate sales price of the registered shares as of the date of filing of the Form S-3 registration statement exceeds the minimum threshold amount. Property and Equipment [Abstract] Property and Equipment [Abstract] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] Building [Member] Building [Member] Computer equipment, furniture, and office equipment [Member] Computer equipment, furniture, and office equipment [Member] Computer equipment is a long lived, depreciable asset that is used in the creation, maintenance and utilization of information systems. Furniture is a long lived, depreciable asset. Office equipment is a long lived, depreciable asset not directly used in the production process for inventories or facilities. Computer software purchased [Member] Software [Member] Capitalized internal-use software [Member] Software Development [Member] Tenant improvements [Member] Leasehold Improvements [Member] Property and equipment Property, Plant and Equipment [Line Items] Property and equipment Property, Plant and Equipment, Gross Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net Concentrations of Credit Risk [Abstract] Concentrations of Credit Risk [Abstract] Geographic Concentration Risk [Member] Geographic Concentration Risk [Member] Entity by Location [Axis] Entity by Location [Axis] Location [Domain] Location [Domain] Utah [Member] Utah [Member] State of Utah. Provo, Utah [Member] Provo, Utah [Member] Provo, Utah. Percentage Investment Securities [Abstract] Investment Securities [Abstract] Fair Value Measured on a Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value by Measurement Frequency [Axis] Fair Value by Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value [Member] Estimate of Fair Value, Fair Value Disclosure [Member] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Corporate Debt Securities [Member] Corporate Debt Securities [Member] Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Other Debt Obligations [Member] Other Debt Obligations [Member] US Government Agencies Debt Securities [Member] US Government Agencies Debt Securities [Member] US States and Political Subdivisions Debt Securities [Member] US States and Political Subdivisions Debt Securities [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Available-for-sale Securities, Fair Value Disclosure Borrowing Agreements [Abstract] Borrowing Agreements [Abstract] Schedule of Line of Credit Facilities [Table Text Block] Schedule of Line of Credit Facilities [Table Text Block] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Other Tax Items [Abstract] Other Tax Items [Abstract] Other Tax Items Operating loss carryforwards Operating Loss Carryforwards Period our tax returns remain subject to examination (in years) Open Tax Years by Major Tax Jurisdiction Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Long-term Purchase Commitment by Category of Item Purchased [Axis] Long-term Purchase Commitment by Category of Item Purchased [Axis] Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] 2012 [Member] Purchase Commitments, Future Minimum Payments Due, Current [Member] For purchase commitments having an initial or remaining term in excess of one year, required payments due within one year of the balance sheet date. 2013 [Member] Purchase Commitments, Future Minimum Payments, Due in Two Years [Member] For purchase commitments having an initial or remaining term in excess of one year, required payments due within the second year of the balance sheet date. 2014 [Member] Purchase Commitments, Future Minimum Payments, Due in Three Years [Member] For purchase commitments having an initial or remaining term in excess of one year, required payments due within the third year of the balance sheet date. 2015 [Member] Purchase Commitments, Future Minimum Payments, Due in Four Years [Member] For purchase commitments having an initial or remaining term in excess of one year, required payments due within the fourth year of the balance sheet date. Thereafter [Member] Purchase Commitments, Future Minimum Payments, Due Thereafter [Member] For purchase commitments having an initial or remaining term in excess of one year, required payments due after the fourth year from the balance sheet date. Minimum Purchase Commitments [Line Items] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment, Amount Long-term Purchase Commitment, Amount Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Financing Receivable, Recorded Investment, by Class of Financing Receivable [Axis] Financing Receivable, Recorded Investment, by Class of Financing Receivable [Axis] Financing Receivable, Recorded Investment, Class of Financing Receivable [Domain] Financing Receivable, Recorded Investment, Class of Financing Receivable [Domain] Real Estate [Member] Mortgage Loans on Real Estate [Member] Commercial [Member] Commercial Loan [Member] Installment [Member] Installment Loan [Member] Installment loan. Financing Receivable Information by Credit Quality Indicator [Axis] Financing Receivable Information by Credit Quality Indicator [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Financing Receivable, by Credit Quality Indicator [Domain] Classified [Member] Classified [Member] A category of financing receivables considered to be substandard, doubtful or loss. Non-Classified [Member] Pass [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Subsequent Events [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Line of Credit Facility [Axis] Line of Credit Facility [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Interest rate desciption Debt Instrument, Description of Variable Rate Basis Interest rate spread Debt Instrument, Basis Spread on Variable Rate Cash collateral Line of Credit, Cash Collateral The amount of cash held as collateral for the line of credit. Amount outstanding Line of Credit Facility, Amount Outstanding Software Development [Member] Property, Plant and Equipment [Line Items] Depreciation and amortization expense Depreciation, Depletion and Amortization Depreciation of internal-use software Depreciation Net carrying value of capitalized internal-use software Assets Measured at Fair Value on a Recurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] Investment Securities, Available-For-Sale Available-for-sale Securities [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Outstanding common shares and voting interest acquired Business Acquisition, Percentage of Voting Interests Acquired Cash paid Business Acquisition, Cost of Acquired Entity, Cash Paid Cash contributed for initial capital base for expanded operations Payments of Capital Distribution Stock Based Compensation [Abstract] Stock-Based Compensation [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Stock-based Compensation [Member] Stock-based Compensation [Member] Stock-based compensation. Stock options [Member] Stock Options [Member] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Other Data [Abstract] Other Data [Abstract] Other data. Total stock-based compensation expense Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Tax benefit from compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Total intrinsic value of exercises Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value Tax benefit realized from exercises Tax Benefit from Stock Options Exercised Aggregate proceeds from exercises Proceeds from Stock Options Exercised Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Weighted-average period unrecognized compensation cost is expected to be recognized (in years) Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Shares awarded Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Stock-Based Retailer Incentive Compensation [Abstract] Stock-Based Retailer Incentive Compensation [Abstract] Stock-Based Retailer Incentive Compensation. Common Stock, Shares, Issued Shares, Vesting Period Shares, Vesting Period The number of months in the vesting period. Stock-based retailer incentive compensation Stock-based retailer incentive compensation We recognize the fair value of shares issued to retail distributors on the vesting date or as our right to repurchase lapses, as applicable. Current [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Current income tax expense Current Income Tax Expense (Benefit) Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Income tax expense Goodwill and Intangible Assets [Abstract] Goodwill and Intangible Assets [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Selected Unaudited Quarterly Financial Information Schedule of Quarterly Financial Information [Table Text Block] RSUs [Member] RSU Rollforward [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Outstanding, beginning Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Outstanding, ending Earnings per Common Share Earnings Per Share [Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Stock options [Member] Stock options Included in Diluted EPS [Member] Incremental common shares attributable to stock options that were included in diluted earnings per share (EPS). A contract that gives the holder the right, but not the obligation, either to purchase or to sell a certain number of shares of stock at a predetermined price for a specified period of time. Restricted stock units [Member] Restricted Stock Units Included in Diluted EPS [Member] Restricted stock units (RSUs) as awarded by a company to their employees as a form of incentive compensation. Employee stock purchase plan [Member] Employee Stock Purchase Plan Shares Included in Diluted EPS [Member] Potential shares issued through the employee stock purchase plan as awarded by a company to their employees as a form of incentive compensation. Class A common stock [Member] Unvested Walmart Shares [Member] Unvested Walmart Shares [Member] The number of unvested Walmart shares. Redeemable Convertible Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member] Allocated Earnings [Axis] Allocated Earnings [Axis] Allocated earnings. Allocated Earnings [Domain] Allocated Earnings [Domain] Allocated Earnings [Domain] Basic earnings per common share [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Basic net income [Abstract] Undistributed Earnings, Basic [Abstract] Allocated Earnings And Deemed Dividends To Preferred Stock Allocated Earnings And Deemed Dividends To Preferred Stock Allocated earnings and deemed dividends to preferred stock. Accretion Of Redeemable Convertible Preferred Stock Accretion Of Redeemable Convertible Preferred Stock Accretion of redeemable convertible preferred stock Net income allocated, basic Undistributed Earnings, Basic Basic weighted-average shares issued and outstanding [Abstract] Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted-average shares issued and outstanding Weighted Average Number of Shares Outstanding, Basic Basic earnings per common share [Abstract] Earnings Per Share, Basic, Two Class Method [Abstract] Basic earnings per Class A common share Earnings Per Share, Basic, Undistributed 401(k) Plan [Abstract] 401(k) Plan [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] 401(k) Plan [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Minimum age (in years) Minimum Age The minimum age to participate in the 401(k) Plan. 401(k) employer match 401(k) Employer Match The discretionary employer matching contribution percentage. 401(k) employer match limit 401(k) Employer Match Limit Participant's eligible compensation percentage eligible for employer match. Matching contributions Defined Contribution Plan, Cost Recognized Subsequent Events [Text Block] Subsequent Events [Text Block] Selected Unaudited Quarterly Financial Information Quarterly Financial Information [Text Block] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Participating Securities [Member] Participating Securities [Member] Participating securities, includes both common stock and preferred stock. Diluted earnings per common share [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Diluted net income [Abstract] Undistributed Earnings, Diluted [Abstract] Allocated earnings to participating securities, net of re-allocated earnings Allocated Earnings To Participating Securities, Net of Re-Allocated Earnings Allocated earnings to participating securities, net of re-allocated earnings. Re-allocated earnings Re-Allocated Earnings Re-allocated earnings. Diluted net income allocated to common stockholders Undistributed Earnings, Diluted Diluted weighted-average shares issued and outstanding [Abstract] Weighted Average Number of Shares Outstanding, Diluted [Abstract] Dilutive potential common shares [Abstract] Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract] Class B common stock Incremental Common Shares Attributable to Conversions of Other Classes of Common Stock Additional shares included in the calculation of diluted EPS as a result of the dilutive effect of convertible common stock. Share-based arrangements Incremental Common Shares Attributable to Share-based Payment Arrangements Warrants Incremental Common Shares Attributable to Call Options and Warrants Diluted weighted-average shares issued and outstanding Weighted Average Number of Shares Outstanding, Diluted Diluted earnings per common share [Abstract] Earnings Per Share, Diluted, Two Class Method [Abstract] Diluted earnings per common share Earnings Per Share, Diluted, Undistributed Schedule of Share-based Goods and Nonemployee Services Transaction [Table] Schedule of Share-based Goods and Nonemployee Services Transaction [Table] Share-based Goods and Nonemployee Services Transaction, by Supplier [Axis] Share-based Goods and Nonemployee Services Transaction, by Supplier [Axis] Share-based Goods and Nonemployee Services Transaction, Supplier [Domain] Share-based Goods and Nonemployee Services Transaction, Supplier [Domain] Other [Line Items] Share-based Goods and Nonemployee Services Transaction [Line Items] Unvested warrant Unvested Warrant Shares issuable under an unvested warrant to purchase our Class B common stock. Deposits [Abstract] Deposits acquired in acquisition Business Acquisition, Purchase Price Allocation, Current Liabilities, Deposits The amount of acquisition cost of a business combination allocated to deposits of the acquired entity. Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Investment Securities Threshold Included in Current Assets Investment Securities Threshold Included in Current Assets The number of days of the original maturity of an investment to be included in current assets. Ownership percentage requiring consolidation Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Letter of credit Letters of Credit Outstanding, Amount Funds Held for Clients Funds Held for Clients Unactivated Funds Held Unactivated Funds Held Funds for prepaid debit cards and cash transfer products that have not yet been activated by the customers. Threshold For Write Off Threshold For Write Off The number of days that must pass without activity in an account to consider recovery remote and write off the balance. Nonaccrual Status Threshold Nonaccrual Status Threshold The number of days a loan must be past due to be considered a nonperforming loan. Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Financing Receivable, Collectively Evaluated for Impairment Allowance for Notes, Loans and Financing Receivable Allowance for Notes, Loans and Financing Receivable Impairment of Long-Lived Assets Held-for-use Impairment of Long-Lived Assets Held-for-use Months to Settle Overdrawn Accounts Months to Settle Overdrawn Accounts The number of months generally expected to settle overdrawn accounts. GPR Average Card Lifetime GPR Average Card Lifetime The number of months of our average GPR card lifetime. Gift Card Average Card Lifetime Gift Card Average Card Lifetime The number of months of our average gift card lifetime. Days to Recognize Cash Transfer Transactions Days to Recognize Cash Transfer Transactions The number of days it generally takes to recognize cash transfer transactions. Sales Commissions and Fees Sales Commissions and Fees Advertising Expense Advertising Expense Manufacturing Costs Manufacturing Costs Shipping, Handling and Transportation Costs Shipping, Handling and Transportation Costs Sales Tax Charged to Customers Sales Tax Charged to Customers The amount of sales tax charged to customers. Loans to bank customers Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Deposits Deposits Deposits, Fair Value Disclosure Deposits, Fair Value Disclosure Accretable Yield Rollforward [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Accretable yield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Additions Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Accretable yield Income Taxes Income Tax Disclosure [Text Block] Comprehensive Income Schedule of Comprehensive Income (Loss) [Table Text Block] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Significant Customer Concentrations Concentration Risk Disclosure [Text Block] Deposits Deposit Liabilities Disclosures [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Corporate bonds [Member] Agency securities [Member] Municipal bonds [Member] Total fixed income securities [Member] Debt Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Fair Value, Less Than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Unrealized Losses, Less Than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Fair Value, 12 Months or More Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Unrealized Losses, 12 Months or More Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses Total Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Total Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Other-than-temporary impairment losses Other than Temporary Impairment Losses, Investments Securities (Assets) [Member] Securities (Assets) [Member] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis Due after one year through five years Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Total Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, within One Year, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value Due after five years through ten years Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Fair value Available-for-sale Securities Computer software purchased [Member] Property, Plant and Equipment, Useful Life, Average Property, Plant and Equipment, Useful Life, Average Property, Plant and Equipment, Useful Life, Minimum Property, Plant and Equipment, Useful Life, Minimum Property, Plant and Equipment, Useful Life, Maximum Property, Plant and Equipment, Useful Life, Maximum Property, Plant and Equipment, Estimated Useful Lives Property, Plant and Equipment, Estimated Useful Lives Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Unaudited Comparative Financial Statement [Table Text Block] Unaudited Comparative Financial Statement [Table Text Block] Unaudited comparative financial statement. Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Provision for uncollectible overdrawn accounts Provision for Doubtful Accounts Employee stock-based compensation Share-based Compensation Amortization of discount on available-for-sale investment securities Amortization of Debt Discount (Premium) Provision for uncollectible trade receivables Provision for Other Losses Impairment of capitalized software Deferred income taxes Excess tax benefits from exercise of options Excess Tax Benefit from Share-based Compensation, Operating Activities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Settlement assets Increase (Decrease) in Settlement Assets The increase (decrease) during the reporting period in settlement assets. Accounts receivable, net Increase (Decrease) in Accounts Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Deferred expenses Increase (Decrease) in Deferred Charges Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Settlement obligations Increase (Decrease) in Settlement Obligations The increase (decrease) during the reporting period in settlement obligations. Amounts due issuing bank for overdrawn accounts Increase (Decrease) in Amounts Due to Card Issuing Bank for Overdrawn Accounts Increase (Decrease) in Amounts Due to Card Issuing Bank for Overdrawn Accounts Deferred revenue Increase (Decrease) in Deferred Revenue Income tax payable/receivable Increase (Decrease) in Income Taxes Payable Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Proceeds from maturities of available-for-sale investment securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities (Increase) decrease in restricted cash Increase (Decrease) in Restricted Cash Payments for acquisition of property and equipment Payments to Acquire Property, Plant, and Equipment Net increase in loans made to bank customers Payments for (Proceeds from) Loans Receivable Acquisition of Bonneville Bancorp, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings from line of credit Proceeds from Lines of Credit Repayments on line of credit Repayments of Lines of Credit Proceeds from exercise of options and issuance of ESPP shares Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Excess tax benefits from exercise of options Excess Tax Benefit from Share-based Compensation, Financing Activities Net increase in deposits Increase (Decrease) in Deposits Exercise of call option on warrant Proceeds from Warrant Exercises Issuance of preferred shares and freestanding warrant Proceeds from Issuance of Preferred Shares and Freestanding Warrant The cash inflow from issuance of preferred shares and rights to purchase shares at predetermined price. Redemption fo preferred and common shares Payments for Repurchase of Equity Proceeds from the repayment of related party notes receivable Repayment of Notes Receivable from Related Parties Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in unrestricted cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Unrestricted cash and cash equivalents, beginning of year Cash and Cash Equivalents, at Carrying Value Unrestricted cahs and cash equivalents, end of period Cash, Cash Equivalents, and Federal Funds Sold Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid Related Party Transactions Related Party Transactions Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Summary of Property and Equipment Schedule of Goodwill [Table] Schedule of Goodwill [Table] Statement, Business Segments [Axis] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Consolidated Balance Sheets [Abstract] Consolidated Balance Sheets [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Unrestricted cash and cash equivalents Federal funds sold Federal Funds Sold Investment securities available-for-sale, at fair-value Available-for-sale Securities, Current Settlement assets Settlement Assets, Current Accounts receivable, net Accounts Receivable, Net, Current Prepaid expenses and other assets Prepaid Expense and Other Assets, Current Income tax receivable Income Taxes Receivable, Current Net deferred tax assets Deferred Tax Assets, Net, Current Total current assets Assets, Current Restricted cash Restricted Cash and Cash Equivalents, Noncurrent Investment securities available-for-sale, at fair value Available-for-sale Securities, Noncurrent Accounts receivable, net Accounts Receivable, Net, Noncurrent Prepaid expenses and other assets Prepaid Expense and Other Assets, Noncurrent Property and equipment, net Deferred expenses Deferred Costs, Noncurrent Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Settlement obligations Settlement Liabilities, Current Amounts due to card issuing banks for overdrawn accounts Amounts due to card issuing banks for overdrawn accounts Amounts due to card issuing banks that fund overdrawn cardholder account balances. Amounts funded are due to the card issuing banks on terms specified in the agreements with the card issuing banks. Generally, these obligations are settled within one year. Other accrued liabilities Other Liabilities, Current Deferred revenue Deferred Revenue, Current Income tax payable Taxes Payable, Current Total current liabilities Liabilities, Current Other accrued liabilities Other Liabilities, Noncurrent Deferred revenue Deferred Revenue, Noncurrent Net deferred tax liabilities Deferred Tax Liabilities, Noncurrent Total liabilities Liabilities Stockholders’ equity: Preferred stock Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Class of Warrant or Right [Table] Class of Warrant or Right [Table] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Sales Volume or Revenue Based Warrant [Member] Sales Volume or Revenue Based Warrant [Member] Warrant provides for shares to be purchased should either certain the sales volume or revenue targets be achieved. Additional Warrant [Member] Additional Warrant [Member] Warrant provides for additional shares to be purchased should the Sales Volume or Revenue Based Warrant become exercisable and additional specified marketing and promotional activities take place. Series D Warrant [Member] Series D Warrant [Member] Warrant provides for shares of our common stock to be purchased. Warrants [Line Items] Class of Warrant or Right [Line Items] Shares issuable, number of shares Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrants, exercise price Class of Warrant or Right, Exercise Price of Warrants or Rights Fair value Warrants and Rights Outstanding Class of Warrant or Rights, Total Exercise Price of Warrants or Rights Class of Warrant or Rights, Total Exercise Price of Warrants or Rights Total proceeds to be paid for warrants or rights upon exercise. Amounts Due Under Line of Credit [Policy Text Block] Amounts Due Under Line of Credit [Policy Text Block] The policy for amounts due under the line of credit. Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Change in Fiscal Year Fiscal Period, Policy [Policy Text Block] Unaudited Comparative Financial Statements Unaudited Comparative Financial Statements [Policy Text Block] Unaudited comparative financial statements. Use of Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] Unrestricted Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Settlement Assets and Obligations Settlement Assets and Obligations Policy [Policy Text Block] Entity's settlement asset and obligations accounting policy. Accounts Receivable, Net Trade and Other Accounts Receivable, Policy [Policy Text Block] Overdrawn Account Balances Due from Cardholders and Reserve for Uncollectible Overdrawn Accounts [Policy Text Block] Overdrawn Account Balances Due from Cardholders and Reserve for Uncollectible Overdrawn Accounts [Policy Text Block] The policy for overdrawn account balances due from cardholders and reserve for uncollectible overdrawn accounts. Loans Finance, Loans and Leases Receivable, Policy [Policy Text Block] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Impairment of Long Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Amounts Due to Card Issuing Banks for Overdrawn Accounts Amounts Due to Card Issuing Banks for Overdrawn Accounts [Policy Text Block] Are policy for amounts due to card issuing banks for overdrawn accounts. Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Sales and Marketing Expenses Cost of Sales, Policy [Policy Text Block] Employee Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Regulatory Matters and Capital Adequacy Regulatory Matters and Capital Adequacy [Policy Text Block] The policy on regulatory matters and capital adequacy. Description of New Accounting Pronouncements Not yet Adopted Description of New Accounting Pronouncements Not yet Adopted [Text Block] Investment Securities Investment [Text Block] Past Due Financing Receivables [Table Text Block] Past Due Financing Receivables [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] PCI Loans [Table Text Block] PCI Loans [Table Text Block] PCI Loans. Accretable Yield [Table Text Block] Accretable Yield [Table Text Block] The activity for the accretable yield on PCI loans. Option Summary [Line Items] Option Rollforward [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Options Granted Gross number of share options (or share units) granted during the period. Canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Outstanding, ending Weighted-average exercise price, beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted-average exercise price, granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted-average exercise price, canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted-average exercise price, exercises Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted-average exercise price, ending Year End Data [Abstract] Year End Data [Abstract] Data as of the most recent year end. Options outstanding, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options vested or expected to vest, number of shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options vested or expected to vest, weighted-average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options vested or expected to vest, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Options exercisable, number of shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options exercisable, weighted-average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options exercisable, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Accounts Receivable Trade and Other Receivables [Text Block] The entire disclosure for claims held for amounts due a company, includes trade accounts receivables. Schedule of Minimum Lease Commitments Operating Leases of Lessee Disclosure [Table Text Block] Schedule of Minimum Purchase Commitments Long-term Purchase Commitment [Table Text Block] Consolidated Statements of Operations [Abstract] Consolidated Statements of Operations [Abstract] Operating Revenues [Abstract] Revenues [Abstract] Card revenues and other fees Card revenues and other fees Card revenues consist of new card fees, monthly maintenance fees, ATM fees and other revenues. We charge new card fees when a consumer purchases a GPR or gift card in a retail store. We charge maintenance fees on GPR cards to cardholders on a monthly basis pursuant to the terms and conditions in our cardholder agreements. We charge ATM fees to cardholders when they withdraw money or conduct other transactions at certain ATMs in accordance with the terms and conditions in our cardholder agreements. Other revenues consist primarily of fees associated with optional products or services, which we generally offer to consumers during the card activation process. Other fees include banking related revenue. Cash transfer revenues Cash transfer revenues We earn cash transfer revenues when consumers purchase and use a MoneyPak or fund their cards through a POS swipe reload transaction in a retail store. Interchange revenues Interchange revenues We earn interchange revenues from fees remitted by the merchant’s bank, which are based on rates established by the payment networks, when cardholders make purchase transactions using our cards. Stock-based retailer incentive compensation Total operating revenues Operating Expenses [Abstract] Operating Expenses [Abstract] Sales and marketing expenses Selling and Marketing Expense Compensation and benefits expenses Labor and Related Expense Processing expenses Communications and Information Technology Other general and administrative expenses Other General and Administrative Expense Operating income Interest income Investment Income, Interest Interest expense Interest Expense, Other Income before income taxes Net income Dividends, accretion, and allocated earnings of preferred stock Preferred Stock Dividends and Other Adjustments Net income allocated to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Earnings per common share: Earnings Per Share [Abstract] Earnings Per Common Share, Basic Earnings Per Share, Diluted Weighted-average common shares issued and outstanding: Weighted-average number of shares issued and outstanding: [Abstract] Weighted-average number of shares issued and outstanding Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Diluted 2010 Equity Incentive Plan [Member] 2010 Equity Incentive Plan [Member] The Plan authorizes the award of stock options, restricted stock awards, stock appreciation rights, restricted stock units, performance shares and stock bonuses. 2010 Employee Stock Purchase Plan [Member] 2010 Employee Stock Purchase Plan [Member] The Plan enables eligible employees to purchase shares of our Class A common stock periodically at a discount. It is intended to qualify as an employee stock purchase plan under Section 423 of the Internal Revenue Code. 2001 Stock Plan [Member] 2001 Stock Plan [Member] The Plan provides for the granting of incentive stock options, nonqualified stock options and other stock awards. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Compensation Plans [Abstract] Compensation Plans [Abstract] Compensation plans in effect. Shares originally reserved Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Yearly, percentage increase in reserved shares Share-based Compensation Arrangement by Share-based Payment Award, Evergreen Percentage The yearly, percentage increase to the number of authorized shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. The percentage increase is applied to the total outstanding shares of our Class A and Class B common stock as of the immediately preceding December 31st. Shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Expiration (in years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Total operating expenses Net income allocated to common stockholders Basic loss per common share Diluted loss per common share Weighted-average diluted common shares issued and outstanding Net cash provided by operating activities Net Cash Provided by Operating Activities, Total The net cash from all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Net cash used in operating activities Net Cash Used in Operating Activities The net cash used in all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Net cash used in financing activities Minimum Lease Payments [Line Items] 2012 Operating Leases, Future Minimum Payments Due, Current 2013 Operating Leases, Future Minimum Payments, Due in Two Years 2014 Operating Leases, Future Minimum Payments, Due in Three Years 2015 Operating Leases, Future Minimum Payments, Due in Four Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Banking and Thrift [Abstract] Regulatory Requirements Regulatory Capital Requirements under Banking Regulations [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Convertible preferred stock [Member] Convertible Preferred Stock [Member] Antidilutive Shares [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Components Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Effective Tax Rate Reconcilion Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Capital Amounts and Ratios [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 capital, actual Tier One Risk Based Capital Tier 1 capital, well capitalized minimum Tier One Risk Based Capital Required to be Well Capitalized Tier 1 capital, amount we exceed well capitalized minimum Excess Tier One Capital Over Well Capitalized Minimums The amount by which our Tier 1 Risk Based Capital exceeds the minimum required to be considered well capitalized. Totak risk-based capital, actual Capital Total risk-based capital, well capitalized minimum Capital Required to be Well Capitalized Total risk-based capital, amount we exceed well capitalized minimum Excess Risk Based Capital Over Well Capitalized Minimums The amount by which our total Risk Based Capital exceeds the minimum required to be considered well capitalized. Average total assets for leverage capital purposes Average Total Assets for Leverage Capital Purposes Average total assets for leverage capital purposes as defined in the regulations. Total risk weighted assets Total Risk Weighted Assets Risk weighted assets as defined in the regulations. Tier 1 leverage ratio, actual Tier One Leverage Capital to Average Assets Tier 1 leverage ratio, well capitalized minimum Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier 1 leverage ratio, amount we exceed well capitalized minimum Excess Tier One Leverage Capital To Average Assets Over Well Capitalized Minimums The amount of excess over well capitalized minimums of Tier 1 leverage divided by average assets as defined in the regulations. Tier 1 risk-based capital ratio, actual Tier One Risk Based Capital to Risk Weighted Assets Tier 1 risk-based capital ratio, well capitalized minimum Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 risk-based capital ratio, amount we exceed well capitalized minimum Excess Tier One Risk Based Capital To Risk Weighted Assets Over Well Capitalized Minimums The amount of excess over well capitalized minimums of Tier 1 risk based capital (which consists of the types of financial capital considered the most reliable and liquid, primarily Shareholders' equity. Examples of Tier 1 capital are common stock or unit, preferred stock or unit that is irredeemable and noncumulative, and retained earnings) divided by risk-weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank. Total risk-based capital ratio, actual Capital to Risk Weighted Assets Total risk-based capital ratio, well capitalized minimum Capital Required to be Well Capitalized to Risk Weighted Assets Total risk-based capital ratio, amount we exceed well capitalized minimum Excess Total Risk Based Capital To Risk Weighted Assets Over Well Capitalized Minimums The amount of excess over well capitalized minimums of total risk based capital divided by risk weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank. Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Summary of Deposits [Table Text Block] Summary of Deposits [Table Text Block] Summary of non-interest bearing and interest-bearing deposit accounts. Contractual Maturities For Total Time Deposits [Table Text Block] Contractual Maturities For Total Time Deposits [Table Text Block] Contractual maturities for total time deposits. 30-59 days past due Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 60-89 days past due Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 90 days or more past due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Past due 30 days or more Financing Receivable, Recorded Investment, Total Past Due 30 Days or More Financing receivables that are equal to or greater than 30 days past due. Current or less than 30 days past due Financing Receivable, Recorded Investment, Total Current or Less Than 30 Days Past Due Financing receivables that are current or less than 30 days past due. Purchased credit-impaired loans Financing Receivable, Acquired with Deteriorated Credit Quality Total outstanding Percentage outstanding, 30-59 days past due Loans, Percentage Outstanding, 30-59 Days Past Due The percentage of loans outstanding that are 30-59 days past due. Percentage outstanding, 60-89 days past due Loans, Percentage Outstanding, 60-89 Days Past Due The percentage of loans outstanding that are 60-89 days past due. Percentage outstanding, 90 days or more past due Loans, Percentage Outstanding, 90 Days or More The percentage of loans outstanding that are 90 days or more past due. Percentage outstanding, total past due 30 days more Loans, Percentage Outstanding, Total Past Due 30 Days or More The percentage of loans outstanding that are 30 days or more past due. Percentage outstanding, current or less than 30 days past due Loans, Percentage Outstanding, Current or Less Than 30 Days Past Due The percentage of loans outstanding that are current or less than 30 days past due. Percentage outstanding, purchase credit-impaired loans Loans, Percentage Outstanding, Purchase Credit-Impaired Loans The percentage of loans outstanding that are purcahse credit-impaired. Percentage oustanding Loans, Percentage Oustanding The percentage of loans outstanding. Allowance for loan losses Loans and Leases Receivable, Allowance Unpaid principal balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Carrying value Contractually required principal balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition Nonaccretable difference Certain Loans Acquired in Transfer, Nonaccretable Difference Cash flows expected to be collected at acquisition Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition Accretable yield Certain Loans Acquired in Transfer, Accretable Yield Fair value of loans acquired Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Acquired Finite-Lived Intangible Assets by Major Class [Axis] Acquired Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core deposit [Member] Core Deposits [Member] Intangible assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Core deposit Acquired Finite-lived Intangible Asset, Amount Useful life (in years) Acquired Finite-lived Intangible Asset, Weighted Average Useful Life Net Deferred Tax Assets and Liabilities [Abstract] Deferred Tax Assets (Liabilities), Net [Abstract] Current net deferred tax assets Deferred Tax Assets (Liabilities), Net, Current Noncurrent net deferred tax liabilities Deferred Tax Assets (Liabilities), Net, Noncurrent Net deferred tax assets Deferred Tax Assets (Liabilities), Net Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] 0.83-1.41 [Member] 0.83-1.41 [Member] Stock options with an exercise price between $0.83 and $1.41. 1.55-4.00 [Member] 1.55-4.00 [Member] Stock options with an exercise price between $1.55 and $4.00. 4.64-10.75 [Member] 4.64-10.75 [Member] Stock options with an exercise price between $4.64 and $10.75. 10.84-17.19 [Member] 10.84-17.19 [Member] Stock options with an exercise price between $10.84 and $17.19. 20.01-31.61 [Member] 20.01-31.61 [Member] Stock options with an exercise price between $20.01 and $31.61. 31.63-55.52 [Member] 31.63-55.52 [Member] Stock options with an exercise price between $31.63 and $55.52. Lower limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Upper limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Outstanding, number Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Outstanding, weighted-average remaining contractual life (in years) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Outstanding, weighted-average exercise price Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price, Beginning Balance Exercisable, number Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options Exercisable, weighted-average remaining contractual life (in years) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term Exercisable, weighted-average exercise price Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price Deferred Tax Assets [Abstract] Components of Deferred Tax Assets [Abstract] Reserve for overdrawn accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves State income taxes Deferred Tax Assets, State Income Taxes The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to state income taxes. Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Fair value adjustment on acquired loans Fair Value Adjustment on Acquired Loans The tax effect as of the balance sheet date of the amount of the fair value adjustment on loans recognized only for tax purposes and which will reverse when recognized under generally accepted accounting principles. Valuation allowance Valuation Allowance, Amount Other Deferred Tax Assets, Other Total deferred tax assets Deferred Tax Assets, Net Deferred Tax Liabilities [Abstract] Components of Deferred Tax Liabilities [Abstract] Internal-use software costs Deferred Tax Liabilities, Deferred Expense, Capitalized Software Deferred expenses Deferred Tax Liabilities, Deferred Expense Core deposit intangible Deferred Tax Liabilities, Goodwill and Intangible Assets, Intangible Assets Property and equipment, net Deferred Tax Liabilities, Property, Plant and Equipment Total deferred tax liabilities Deferred Tax Liabilities Commercial paper [Member] Negotiable certificate of deposit [Member] Total fixed income securities [Member] Available-for-sale Securities, Fair Value Disclosure Amortized cost Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Securities, Gross Unrealized Gains Gross unrealized losses Available-for-sale Securities, Gross Unrealized Losses Concentrations of Credit Risk [Text Block] Concentrations of Credit Risk [Text Block] The entire disclosure for any concentrations of credit risk resulting from financial instruments existing at the date of the financial statements. This disclosure informs financial statement users about the general nature of the risk associated with the concentration. IPO [Axis] IPO [Axis] IPO IPO [Domain] IPO [Domain] IPO [Domain] IPO [Member] IPO [Member] Series C-1 preferred stock [Member] Series C Preferred Stock [Member] Price per share sold Sale of Stock, by Company, Price Per Share The price per share received by a company in a stock sale. Warrant exercised Shares Issued During the Period, Shares, Exercise of Warrant The number of shares issued upon exercise of a warrant. Warrants, exercise price Options exercised, number Preferred stock, shares issued upon conversion Grants [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Number granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number granted Weighted-average exercise price Weighted-average grant-date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Fair value assumptions [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term (life) of options (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected dividends Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Summary of Deposits [Table] Summary of Deposits [Table] Summary of non-interest bearing and interest-bearing deposit accounts. Summary of Deposits [Axis] Summary of Deposits [Axis] Summary of non-interest bearing and interest-bearing deposit accounts. Summary of Deposits [Domain] Summary of Deposits [Domain] Summary of non-interest bearing and interest-bearing deposit accounts. Summary of Deposits [Line Items] Summary of Deposits [Line Items] Summary of non-interest bearing and interest-bearing deposit accounts. Non-interest bearing deposit accounts Noninterest-bearing Deposit Liabilities, by Component [Abstract] Checking Noninterest-bearing Domestic Deposit, Checking Demand deposit Noninterest-bearing Domestic Deposit, Demand Total non-interest bearing deposit accounts Noninterest-bearing Deposit Liabilities, Domestic Interest-bearing deposit accounts Interest-bearing Deposit Liabilities, by Component [Abstract] Negotiable order of withdrawal (NOW) Interest-bearing Domestic Deposit, Negotiable Order of Withdrawal (NOW) Savings Interest-bearing Domestic Deposit, Savings Time Deposits, denominations greater or equal than $100 Time Deposits, $100,000 or More, Domestic Time Deposits, denominations less than $100 Time Deposits, Less than $100,000 Total interest-bearing deposit accounts Interest-bearing Deposit Liabilities, Domestic Total deposits Noncumulative Preferred Stock [Member] Noncumulative Preferred Stock [Member] Class of Warrant or Right, Number of Securities Called by Warrants or Rights Stock Issued During Period, Shares, New Issues Temporary Equity, Shares Issued Proceeds from Issuance of Redeemable Preferred Stock Proceeds from Issuance of Redeemable Preferred Stock Sale of Stock, Consideration Received on Transaction Adjustments to Additional Paid in Capital, Warrant Issued Temporary Equity, Stock Issued During Period, Value, New Issues Temporary Equity, Stock Issued During Period, Value, New Issues Stock repurchased during period, shares Stock Redeemed or Called During Period, Shares Preferred Stock, Dividend Rate, Per-Dollar-Amount Preferred Stock, Dividend Rate, Per-Dollar-Amount Temporary Equity, Liquidation Preference Per Share Temporary Equity, Liquidation Preference Per Share Preferred Stock, Redemption Price Per Share Series D Per Annum Rate Series D Per Annum Rate In the event of any liquidation, dissolution or winding up of our company, the rate, per annum, from the date of issuance entitled to the holder. Class of Warrant or Right, Exercise Price of Warrants or Rights Stock Redeemed or Called During Period, Value Temporary Equity, Redemption Value Stock Redeemed or Called During Period, Value Per Share Temporary Equity, Redemption Price Per Share Class B Conversions to Class A [Member] Class B Conversions to Class A [Member] The number of shares converted from class B common stock to clas A common stock. Shares sold Public Offering, Shares Sold The number of shares sold in a public offering. Offering price Public Offering, Offering Price The price per share sold in a public offering. Exercise of options, shares issued Contractual Maturities For Total Time Deposits [Table] Contractual Maturities For Total Time Deposits [Table] Schedule of contractual maturities for total time deposits. Contractual Maturities for Total Time Deposits [Axis] Contractual Maturities for Total Time Deposits [Axis] Contractual maturities for total time deposits. Contractual Maturities for Total Time Deposits [Domain] Contractual Maturities for Total Time Deposits [Domain] Contractual maturities for total time deposits. Contractual Maturities for Total Time Deposits [Line Items] Contractual Maturities for Total Time Deposits [Line Items] Contractual maturities for total time deposits. Due in 2012 Time Deposit Maturities, Year One Due in 2013 Time Deposit Maturities, Year Two Due in 2014 Time Deposit Maturities, Year Three Due in 2015 Time Deposit Maturities, Year Four Due in 2016 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Total time deposits Time Deposits Borrowing Agreements Debt Disclosure [Text Block] Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and in Stockholders' Equity [Abstract] Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and in Stockholders' Equity [Abstract] Statement, Equity Components [Axis] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Convertible Preferred Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Related Party Notes Receivable [Member] Related Party Notes Receivable [Member] Related party notes receivable. Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Temporary Equity, Carrying Amount Temporary Equity, Carrying Amount Temporary Equity, Shares Outstanding Temporary Equity, Shares Outstanding Balance, amount Balance, shares Shares, Issued Exercise of options, amount Stock Issued During Period, Value, Stock Options Exercised Issuance of related party notes receivable Origination of Notes Receivable from Related Parties Interest on related party notes receivable Interest Expense, Related Party Repayment of related party notes receivable Exercise of options and warrants, shares issued Exercise of options and warrants, Number Number of shares issued upon the exercise of options and warrants. Exercise of options and warrants, amount Exercise of options and warrants, amount Amount received from the exercise of options and warrants. Exercise of options and issuance of ESPP, shares issued Exercise of Options and Issuance of ESPP, Number Number of shares issued upon the exercise of options and issuance of ESSP shares. Exercise of Options and Issuance of ESPP Shares, Amount Exercise of Options and Issuance of ESPP Shares, Amount Amount issued upon the exercise of options and issuance of ESPP shares. Stock-based compensation, shares issued Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock-based compensation, amount Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Accretion of redeemable convertible preferred stock Temporary Equity, Accretion to Redemption Value Stock repurchased during period, amount Stock Redeemed or Called During Period, Value Share issuances Stock Issued During Period, Shares, New Issues Issuance of new shares Stock Issued During Period, Value, New Issues Conversion of preferred stock upon IPO, shares Conversion of Preferred Stock Upon IPO, Number Number of shares of preferred common stock converting to Class B common stock in the IPO. Conversion of preferred stock upon IPO, amount Conversion of Preferred Stock Upon IPO, Amount Number of amount of preferred stock converting to Class B common stock in the IPO. Conversion of Class B common stock upon IPO, shares Conversion of Class B common stock upon IPO, Number Number of shares of Class B common stock converting to Class A common stock in the IPO. Conversion of Class B common stock upon IPO, amount Conversion of Class B common stock upon IPO, Amount Amount of Class B common stock converting to Class A common stock in the IPO. Conversion of Class B common stock upon follow on offering, number Conversion of Class B common stock upon follow on offering, Number Number of shares of Class B common stock converting to Class A common stock in the follow-on offering. Conversion of Class B common stock upon follow-on offering, amount Conversion of Class B common stock upon follow-on offering, amount Amount of Class B common stock converting to Class A common stock in the follow-on offering. Conversion of Class B common stock by stockholders, shares Conversion of Class B common stock by stockholders, amount Conversion of Stock, Amount Converted Exercise of call option on warrants Exercise of Call Option on Warrants Exercise of call option on warrants. Comprehensive income Balance, amount Balance, shares Temporary Equity, Carrying Amount Temporary Equity, Shares Outstanding 401(k) Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Grant Summary Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Option Summary Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] RSU Summary Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Options by Exercise Price Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Balance Sheet Parenthetical [Abstract] Balance Sheet Parenthetical [Abstract] Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Common Stock, Shares, Outstanding Convertible Series A preferred stock, par value Preferred Stock, Par or Stated Value Per Share Shares authorized Shares issued Shares outstanding