Disclosure of Compensation Related Costs, Share-based Payments [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] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Certain Employee Certain Employee [Member] Certain Employee [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Vesting as of first anniversary Share-based Compensation Award, Tranche One [Member] Vesting each month after first anniversary date Share-based Compensation Award, Tranche Two [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Employee Stock Option Employee Stock Option [Member] RSUs Restricted Stock Units (RSUs) [Member] Inducement Award Restricted Stock Units Inducement Award Restricted Stock Units [Member] Inducement Award Restricted Stock Units [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2016 Omnibus Incentive Plan 2016 Omnibus Incentive Plan [Member] 2016 Omnibus Incentive Plan [Member] 2016 Omnibus Incentive Plan and 2014 Equity Incentive Plan 2016 Omnibus Incentive Plan And 2014 Equity Incentive Plan [Member] 2016 Omnibus Incentive Plan And 2014 Equity Incentive Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock based compensation expense Allocated Share-based Compensation Expense Number of shares reserved for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Plan expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Options forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Additional compensation expense Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Weighted average grant-date fair value (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Unrecognized compensation cost, stock options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Unrecognized compensation, weighted average period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Options exercised during the period, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Weighted average grant-date fair value (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Total vest-date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Unrecognized compensation, RSUs Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Earnings Per Share [Abstract] Numerator (basic): Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Numerator (diluted): Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Denominator (basic): Weighted Average Number of Shares Outstanding, Basic [Abstract] Basic weighted average number of shares outstanding Weighted Average Number of Shares Outstanding, Basic Denominator (diluted): Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Effect of potentially dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Convertible Preferred Stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Employee stock plans (options and RSUs) (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Convertible Term Notes (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Diluted weighted average number of shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic and diluted earnings (loss) per share: Earnings Per Share, Basic and Diluted [Abstract] Basic earnings (loss) per share (in usd per share) Earnings Per Share, Basic Diluted earnings (loss) per share (in usd per share) Earnings Per Share, Diluted Fair Value Disclosures [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Floating rate Measurement Input, Floating Rate [Member] Measurement Input, Floating Rate [Member] Risk-free rate Measurement Input, Risk Free Interest Rate [Member] Market yield Measurement Input, Expected Dividend Rate [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Debt Debt [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Probability Weighted Valuation Technique Probability Weighted Valuation Technique [Member] Probability Weighted Valuation Technique [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Expected life Debt Securities, Available-for-sale, Term Measurement input Debt Securities, Available-for-sale, Measurement Input Receivables [Abstract] Revenue from consumer loans Interest Income and Interest Expense Disclosure [Table Text Block] Schedule of loans receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Changes in the allowance for loan losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Troubled debt restructurings Troubled Debt Restructurings on Financing Receivables [Table Text Block] Income Tax Disclosure [Abstract] Deferred Tax Assets and Deferred Tax Liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Deferred Tax Assets: Deferred Tax Assets, Gross [Abstract] Allowance for losses on loans receivable Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Net operating loss carryforward – foreign Deferred Tax Assets, Operating Loss Carryforwards, Foreign Net operating loss carryforward – domestic Deferred Tax Assets, Operating Loss Carryforwards, Domestic Cumulative translation adjustment – domestic Deferred Tax Assets, Unrealized Currency Losses Research and development credit Deferred Tax Assets, Tax Credit Carryforwards, Research Deferred equity compensation costs Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred equity issuance costs Deferred Tax Assets, Tax Deferred Expense, Equity Issuance Costs Deferred Tax Assets, Tax Deferred Expense, Equity Issuance Costs Other Deferred Tax Assets, Other Total deferred tax assets Deferred Tax Assets, Gross Deferred Tax Liabilities: Deferred Tax Liabilities, Gross [Abstract] Property and equipment, principally due to differences in depreciation Deferred Tax Liabilities, Property, Plant and Equipment Amortization of intangible assets Deferred Tax Liabilities, Intangible Assets Prepaid expenses Deferred Tax Liabilities, Prepaid Expenses Net deferred tax assets before valuation allowance Deferred Tax Assets, Net Of Deferred Tax Liabilities Amount, before allocation of valuation allowances and after allocation of deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred tax assets, net Deferred Tax Assets, Net Current income tax expense (benefit): Current Federal, State and Local, Tax Expense (Benefit) [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Foreign Current Foreign Tax Expense (Benefit) Total current income tax expense Current Federal, State and Local, Tax Expense (Benefit) Deferred income tax expense (benefit): Deferred Federal, State and Local, Tax Expense (Benefit) [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Total deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Total income tax expense (benefit) Income Tax Expense (Benefit) Payables and Accruals [Abstract] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] VPC Victory Park Management, LLC [Member] Victory Park Management, LLC [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Number of debt facilities Number of Debt Facilities Number of Debt Facilities Commitments and Contingencies Disclosure [Abstract] Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Balance at beginning of year Loss Contingency Accrual Accruals Loss Contingency Accrual, Provision Payments Loss Contingency Accrual, Payments Effects of changes in foreign currency rates Loss Contingency, Effect of Change in Foreign Currency Rates Loss Contingency, Effect of Change in Foreign Currency Rates Balance at end of year Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents Loans receivable, net of allowance for loan losses of $91,608 and $87,946, respectively Loans and Leases Receivable, Net Amount Prepaid expenses and other assets Prepaid Expense and Other Assets Receivable from CSO lenders Financing Receivables, CSO Lenders Financing Receivables, CSO Lenders Receivable from payment processors Financing Receivables, Payment Processors Financing Receivables, Payment Processors Deferred tax assets, net Deferred Income Tax Assets, Net Property and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Derivative assets at fair value (cost basis of $109 and $0, respectively) Derivative Asset Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Accounts payable and accrued liabilities (See Note 16) Accounts Payable and Accrued Liabilities State and other taxes payable Taxes Payable Deferred revenue Contract with Customer, Liability Notes payable, net (See Note 16) Long-term Debt Derivative liability Derivative Liability Total liabilities Liabilities COMMITMENTS, CONTINGENCIES AND GUARANTEES (Note 14) Commitments and Contingencies STOCKHOLDERS’ EQUITY Stockholders' Equity Attributable to Parent [Abstract] Preferred stock; $0.0004 par value; 24,500,000 authorized shares; none issued and outstanding at December 31, 2018 and 2017 Preferred Stock, Value, Issued Common stock; $0.0004 par value; 300,000,000 authorized shares; 43,329,262 and 42,165,524 issued and outstanding, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income, net of tax effects of $1,257 and $2,273, respectively Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Outstanding balance of notes payable, net of debt issuance costs Schedule of Long-term Debt Instruments [Table Text Block] Future debt maturities Schedule of Maturities of Long-term Debt [Table Text Block] Loans Receivable and Revenues Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Segment Reporting [Abstract] Summary of the allocation of net revenues and long-lived assets based on geography Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] Retirement Benefits [Abstract] Defined Contribution Plan [Table] Defined Contribution Plan [Table] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] United States UNITED STATES Foreign Plan Foreign Plan [Member] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Think Finance 401(k) Plan Think Finance 401(k) Plan [Member] Think Finance 401(k) Plan [Member] Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan Disclosure [Line Items] Minimum age of employee for eligibility Defined Contribution Plan, Minimum Age Of Employee For Eligibility Defined Contribution Plan, Minimum Age Of Employee For Eligibility Minimum term of employee service for eligibility Defined Contribution Plan, Minimum Term Of Employee Service For Eligibility Defined Contribution Plan, Minimum Term Of Employee Service For Eligibility Matching contribution, percent of match Defined Contribution Plan, Employer Matching Contribution, Percent of Match Matching contribution, percent of participant's compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Maximum percentage of eligible earnings each participant may contribute Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employer contributions Defined Contribution Plan, Employer Discretionary Contribution Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Indirect guarantee of indebtedness Indirect Guarantee of Indebtedness [Member] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Cash reserve required, percentage of outstanding loan principal Cash Reserve Required, Percentage Of Outstanding Loan Principal Cash Reserve Required, Percentage Of Outstanding Loan Principal Estimated losses Loss Contingency, Estimate of Possible Loss Loans receivable guaranteed Guaranty Liabilities Receivable related to 25%-45% cash reserve Financing Receivable, Cash Reserve Required, CSO Lenders Financing Receivable, Cash Reserve Required, CSO Lenders Receivable (payable) related to CSO fees collected by CSO lenders Financing Receivable (Payable), CSO Lenders Fees Financing Receivable (Payable), CSO Lenders Fees Receivable related to licensing and servicing arrangements with CSO lenders Financing Receivable, CSO Lenders Licensing And Servicing Arrangements Financing Receivable, CSO Lenders Licensing And Servicing Arrangements Total receivable from CSO lenders Summary of Quarterly Results of Operations Quarterly Financial Information [Table Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] VPC, EF SPV, and ESPV Facilities VPC, EF SPV, and ESPV Facilities [Member] VPC, EF SPV, and ESPV Facilities [Member] VPC and ESPV Facilities, Excluding 4th Tranche Term Note VPC and ESPV Facilities, Excluding 4th Tranche Term Note [Member] VPC and ESPV Facilities, Excluding 4th Tranche Term Note [Member] EF SPV Facility EF SPV Facility [Member] EF SPV Facility [Member] 4th Tranche Term Note 4th Tranche Term Note [Member] 4th Tranche Term Note [Member] Basis spread on variable interest rate, floor Debt Instrument, Basis Spread on Variable Rate, Floor Debt Instrument, Basis Spread on Variable Rate, Floor Basis spread on variable interest rate Debt Instrument, Basis Spread on Variable Rate Commitment amount Line of Credit Facility, Maximum Borrowing Capacity Percent of revolver in first quarter of each year for each product facility Line of Credit Facility, Maximum Borrowing Capacity, Annual Percent in First Quarter of Each Year Line of Credit Facility, Maximum Borrowing Capacity, Annual Percent in First Quarter of Each Year Basis point reduction in cost of funds subject to certain net income thresholds Debt Instrument, Interest Rate, Increase (Decrease) Threshold for basis point reduction Debt Instrument, Basis Spread on Variable Rate, Basis Point Reduction, Prior Year Net Income Threshold Debt Instrument, Basis Spread on Variable Rate, Basis Point Reduction, Prior Year Net Income Threshold Long-term debt Long-term Debt, Gross Amendment fee Line of Credit Facility, Amendment Fee Line of Credit Facility, Amendment Fee Income tax expense (benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Income tax rate reconciliation 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] Changes in unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Risk-free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Expected volatility, weighted average Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Expected volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Stock Option Activity Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options Cancelled/Forfeited (in shares) Options outstanding (in shares) Options exercisable at (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Stock Options, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options Outstanding, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options Granted, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options Exercised, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options Forfeited, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price (in usd per share) Options exercisable, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options Outstanding, Weighted Average Remaining Contractual Life Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options exercisable, Weighted Average Remaining Contractual Life Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Property, Plant and Equipment [Abstract] Depreciation expense Depreciation Internal-use software projects deemed fully impaired Impairment of Intangible Assets, Number of Projects Fully Impaired Impairment of Intangible Assets, Number of Projects Fully Impaired Impairment expense recognized Impairment of Intangible Assets (Excluding Goodwill) Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Exercise Price Range [Axis] 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] $2.13 Exercise Price Range One [Member] Exercise Price Range One [Member] $3.16 Exercise Price Range Two [Member] Exercise Price Range Two [Member] $4.29 - 4.57 Exercise Price Range Three [Member] Exercise Price Range Three [Member] $5.15 - 5.84 Exercise Price Range Four [Member] Exercise Price Range Four [Member] $6.31 Exercise Price Range Five [Member] Exercise Price Range Five [Member] $7.65 Exercise Price Range Six [Member] Exercise Price Range Six [Member] $8.08 - 8.32 Exercise Price Range Seven [Member] Exercise Price Range Seven [Member] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Exercise price, low end of range (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Exercise price, high end of range (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Options Outstanding Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Goodwill and Intangible Assets Disclosure [Abstract] 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Related Party Transactions [Abstract] Expenses related to board of directors Schedule of Related Party Transactions [Table Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Furniture and fixtures Furniture and Fixtures [Member] Equipment Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Software and software development Software and Software Development Costs [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, capitalization threshold Property, Plant And Equipment, Cost Capitalization Threshold Property, Plant And Equipment, Cost Capitalization Threshold Capitalized Computer Software, Net [Abstract] Capitalized Computer Software, Net [Abstract] Software development costs Capitalized Computer Software, Gross Less: accumulated amortization Capitalized Computer Software, Accumulated Amortization Net book value Capitalized Computer Software, Net Amortization expense Capitalized Computer Software, Amortization Estimated useful life Property, Plant and Equipment, Useful Life Summary of the assets and liabilities of the VIE Schedule of Variable Interest Entities [Table Text Block] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Credit Services Organization Lenders Credit Services Organization Lenders [Member] Credit Services Organization Lenders [Member] Elastic SPV, Ltd. Elastic SPV, Ltd. [Member] Elastic SPV, Ltd. [Member] EF SPV, Ltd. EF SPV, Ltd. [Member] EF SPV, Ltd. [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Variable interest entity, number of entities Variable Interest Entity, Number of Entities Variable Interest Entity, Number of Entities Loan purchase interest percentage Loan Purchase Right Percentage Loan Purchase Right Percentage Statement of Comprehensive Income [Abstract] Foreign currency translation adjustment, tax expense (benefit) Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Change in derivative valuation, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Cap Interest Rate Cap [Member] ESPV Facility ESPV Facility [Member] ESPV Facility [Member] ESPV Term Note, August 13, 2018 Maturity Date ESPV Term Note, August 13, 2018 Maturity Date [Member] ESPV Term Note, August 13, 2018 Maturity Date [Member] 3-month LIBOR 3-month London Interbank Offered Rate (LIBOR) [Member] 3-month London Interbank Offered Rate (LIBOR) [Member] Debt Instrument, Interest Rate [Axis] Debt Instrument, Interest Rate [Axis] Debt Instrument, Interest Rate [Axis] Debt Instrument, Interest Rate [Domain] Debt Instrument, Interest Rate [Domain] [Domain] for Debt Instrument, Interest Rate [Axis] Outstanding balance up to $50 Million Debt Instrument, interest Rate, Tranche One [Member] Debt Instrument, interest Rate, Tranche One [Member] Outstanding balance greater than $50 Million Debt Instrument, interest Rate, Tranche Two [Member] Debt Instrument, interest Rate, Tranche Two [Member] Outstanding balance in excess of $100 Million Debt Instrument, interest Rate, Tranche Three [Member] Debt Instrument, interest Rate, Tranche Three [Member] Outstanding amounts greater than $150 Million Debt Instrument, interest Rate, Tranche Four [Member] Debt Instrument, interest Rate, Tranche Four [Member] Maximum borrowing amount Line of credit outstanding Long-term Line of Credit Percentage decrease in base rates Blended interest rate Long-term Debt, Weighted Average Interest Rate, at Point in Time Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Domain names Trademarks and Trade Names [Member] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Acquired technology Technology-Based Intangible Assets [Member] Non-compete Noncompete Agreements [Member] Customers Customer-Related Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-lived intangible assets, cost Finite-Lived Intangible Assets, Gross Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible assets, cost Intangible Assets, Gross (Excluding Goodwill) Intangible assets, net Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Direct marketing costs Advertising [Member] Statement [Line Items] Statement [Line Items] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Cost of sales: Cost of Revenue [Abstract] Provision for loan losses Provision for Loan and Lease Losses Direct marketing costs Cost of Goods and Services Sold Other cost of sales Other Cost of Operating Revenue Total cost of sales Cost of Revenue Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Compensation and benefits Labor and Related Expense Professional services Professional Fees Selling and marketing Selling and Marketing Expense Occupancy and equipment (See Note 16) Operating Leases, Rent Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Other Other General Expense Total operating expenses Operating Expenses Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Net interest expense (See Note 16) Interest Expense Foreign currency transaction gain (loss) Foreign Currency Transaction Gain (Loss), before Tax Non-operating income (loss) Nonoperating Income (Expense) Total other expense Nonoperating Income (Expense) and Interest and Debt Expense Nonoperating Income (Expense) and Interest and Debt Expense Income (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Net income (loss) Basic income (loss) per share (in usd per share) Diluted income (loss) per share (in usd per share) Basic weighted average shares outstanding Diluted weighted average shares outstanding Receivables (payables) related to the CSO lenders Schedule Of Credit Service Organization Receivables And Payables [Table Text Block] Schedule Of Credit Service Organization Receivables And Payables [Table Text Block] Property and equipment Property, Plant and Equipment [Table Text Block] 401(k) Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Leases [Abstract] Future minimum lease payments for operating leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Assumptions used to determine fair value of options granted Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of stock option activity Share-based Compensation, Stock Options, Activity [Table Text Block] Options outstanding at respective exercise price Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] Summary of RSUs activity Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Consolidation, Eliminations Consolidation, Eliminations [Member] Loans receivable, net of allowance for loan losses Prepaid expenses and other assets Derivative asset at fair value Total assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Accounts payable and accrued liabilities Reserve deposit liability Deposits Notes payable, net Accumulated other comprehensive income Shareholder's equity Total liabilities and shareholder’s equity Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Loans receivable, allowance Loans and Leases Receivable, Allowance Derivative assets at fair value, cost basis Derivative Asset, Notional Amount Income Tax [Table] Income Tax [Table] Income Tax [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Domestic tax authority Domestic Tax Authority [Member] Foreign tax authority Foreign Tax Authority [Member] Income Tax [Line Items] Income Tax [Line Items] [Line Items] for Income Tax [Table] Federal statutory rate of 21%, 35% and 35%, respectively Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income tax provision Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Permanent differences Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Change in statutory tax rate Effective 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Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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 Public Float Entity Public Float Entity Shell Company Entity Shell Company Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Schedule of Financing Receivable, Troubled Debt Restructurings [Table] 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Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Reserve deposits Increase (Decrease) in Deposit Assets Receivables from payment processors Increase (Decrease) in Financing Receivable, Payment Processors Increase (Decrease) in Financing Receivable, Payment Processors Receivables from CSO lenders Increase (Decrease) in Financing Receivable, CSO Lenders Increase (Decrease) in Financing Receivable, CSO Lenders Interest receivable Increase (Decrease) in Accrued Interest Receivable, Net State and other taxes payable Increase (Decrease) in Accrued Taxes Payable Deferred revenue Increase (Decrease) in Contract with Customer, Liability Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING 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revenue CSO Fees On Loans Paid Off CSO Fees On Loans Paid Off Derivative debt discount on convertible term notes Derivative Debt Discount on Convertible Notes Derivative Debt Discount on Convertible Notes Property and equipment accrued but not yet paid Capital Expenditures Incurred but Not yet Paid Prepaid expenses accrued but not yet paid Prepaid Expenses Incurred But Not Yet Paid Prepaid Expenses Incurred But Not Yet Paid Impact on deferred tax assets of adoption of ASU 2016-09 Deferred Tax Assets, Adoption of ASU 2016-09 Deferred Tax Assets, Adoption of ASU 2016-09 Impact on OCI and retained earnings of adoption of ASU 2018-02 Other Comprehensive Income (Loss) And Retained Earnings, Adoption Of ASU 2018-02 Other Comprehensive Income (Loss) And Retained Earnings, Adoption Of ASU 2018-02 Changes in fair value of interest rate caps Derivative, Gain (Loss) on Derivative, Net Deferred IPO costs included in Additional paid-in capital Adjustments to Additional Paid in Capital, Stock 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Fair Value Granted, Weighted Average Grant Date Fair Value (in usd per share)