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Note 2 - Significant Accounting Policies and Consolidated Financial Statement Components (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Payment for Acquisition, Loan and Lease, Held-for-Investment | $ 61.0 | $ 65.0 |
Financing Receivable, Deferred Commitment Fee | $ 18.7 |  | $ 17.9
Weighted Average Remaining Accretion Period of Deferred Revenue (Month) | 25 months |  | 26 months
Effective Income Tax Rate Reconciliation, Percent | 21.10% | 23.80% |
Unrecognized Tax Benefits, Interest on Income Taxes Expense |  | $ 0.9 |

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