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Power Finance, Inc. [Member] Power Finance, Inc. 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consideration liability Business Combination, Contingent Consideration, Liability Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] All Individuals All Individuals [Member] Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Other income (expense), net Other Nonoperating Income (Expense) Entity Filer Category Entity Filer Category Purchase commitment Purchase Obligation Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Repurchase of early exercised stock options (in shares) Stock Repurchased During Period, Shares Platform services revenue, net Platform Service Revenue, Net [Member] Platform Service Revenue, Net PEO Name PEO Name Concentration risk, percentage Concentration Risk, Percentage Vested warrants outstanding (in shares) Class of Warrant or Right, Outstanding Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Tranche 5 Share-based Payment Arrangement, Tranche Five [Member] Share-based Payment Arrangement, Tranche Five Grant (in dollars 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 Prepaid insurance Prepaid Insurance Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Purchase commitment period (in years) Long-Term Purchase Commitment, Period Asset-backed securities Asset-Backed Securities [Member] Prepaid Expenses and Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Largest customer Customer 1 [Member] Customer 1 Proceeds from shares issued in connection with employee stock purchase plan Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Excluding Option Exercised Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Options Vested, Aggregate Intrinsic Value (in USD) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Number of investments Concentration Risk, Credit Risk, Financial Instruments, Number of Investments Concentration Risk, Credit Risk, Financial Instruments, Number of Investments Class of Stock [Axis] Class of Stock [Axis] Entities [Table] Entities [Table] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Short-term investments Debt Securities, Available-for-Sale, Current Combined voting power of stockholder, 10% Stockholder Share-based Compensation Arrangement by Share-based 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Disclosures, Individual Name Share Repurchase Program [Axis] Share Repurchase Program [Axis] Other liabilities Other Liabilities [Member] Cover [Abstract] Cover [Abstract] Credit Concentration Risk Credit Concentration Risk [Member] Exercisable, Weighted Average Remaining Contractual Life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Category of Item Purchased [Axis] Category of Item Purchased [Axis] Subsequent Events Subsequent Events [Text Block] Prepaid expenses Other Prepaid Expense, Current Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Compensation and benefits Labor and Related Expense Restructuring and Related Activities [Abstract] Other liabilities Other liabilities Other Liabilities, Noncurrent Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, 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