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Note 2 - Significant Accounting Policies and Consolidated Financial Statement Components (Details Textual) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Apr. 30, 2022 USD ($) | Jan. 01, 2022 USD ($)
Retained Earnings (Accumulated Deficit), Total | $ 113,828 |  | $ 113,828 | $ 60,236 |  |  |
Payments to Acquire Loans and Leases Held-for-investment, Total | 56,500 | $ 50,500 |  |  |  |  |
Loans and Leases Receivable, Deferred Income | $ 15,878 |  | 15,878 | $ 29,281 |  |  |
Weighted Average Remaining Accretion Period of Deferred Revenue (Month) | 26 months |  |  | 15 months |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | $ 15,900 |  | $ 15,900 | $ 20,400 |  |  |
Financing Receivable, Allowance for Credit Loss, Recovery | $ 300 | $ 3,700 |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  |  | 84,878 |  | 51,424 |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  |  | $ 89,500 |  | $ 59,200 |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 18.80% | 15.00% |  |  |  |  |
Gain (Loss) on Extinguishment of Debt, Total | $ (0) | $ (7,807) |  |  |  |  |
Loans Receivable, Fair Value Disclosure | 1,405,765 |  | 1,405,765 | 1,026,424 |  |  |
Loans and Leases Receivable, Gross | 99,916 |  | 99,916 | 470,293 |  |  |
Loans and Leases Receivable, Allowance | 1,612 |  | 1,612 | 57,201 |  |  |
Accounts Payable and Accrued Liabilities, Total | 50,905 |  | 50,905 | $ 42,287 |  |  |
Auto Finance [Member] |  |  |  |  |  |  |
Loss Contingency Accrual, Ending Balance | 8,500 |  | $ 8,500 |  |  |  |
Subsequent Event [Member] | Auto Finance [Member] |  |  |  |  |  |  |
Loss Contingency Accrual, Ending Balance |  |  |  |  |  | $ 8,500 |
Five Point Eight Seven Five Percent Convertible Senior Notes Due Two Thousand Thirty Five [Member] | Convertible Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.875% |  |  | 5.875% |  |
Extinguishment of Debt, Amount |  | $ 14,700 |  |  |  |  |
Repayments of Convertible Debt |  | 18,600 |  |  |  |  |
Gain (Loss) on Extinguishment of Debt, Total |  | (7,800) |  |  |  |  |
Receivables Recoveries from Employed Third-Party Collectors ][Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Recovery | 300 | 2,400 |  |  |  |  |
Receivable Recoveries from Sales of Charged-Off Accounts to Third-Parties [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Recovery | $ 0 | $ 1,300 |  |  |  |  |
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Retained Earnings (Accumulated Deficit), Total |  |  |  |  |  |  | $ 8,600
Loans and Leases Receivable, Deferred Income |  |  |  |  |  |  | (15,600)
Loans Receivable, Fair Value Disclosure |  |  |  |  |  |  | 315,000
Loans and Leases Receivable, Gross |  |  |  |  |  |  | (375,700)
Loans and Leases Receivable, Allowance |  |  |  |  |  |  | (55,600)
Accounts Payable and Accrued Liabilities, Total |  |  |  |  |  |  | (600)
Deferred Income Tax Liabilities, Net |  |  |  |  |  |  | $ 2,500

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