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Note 2 - Significant Accounting Policies and Consolidated Financial Statement Components - Summary of Aging of Delinquent Loans and Fees Receivable (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing receivable, gross | $ 100,144 | $ 98,425
Balance of loans greater than 90-days delinquent still accruing interest and fees | 2,100 | 2,600
Loans at Amortized Cost [Member] |  |
Financing receivable, gross | 122,300 | 118,000
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing receivable, gross | 7,800 | 9,400
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing receivable, gross | 3,000 | 3,400
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing receivable, gross | 3,200 | 3,500
Financial Asset, Past Due [Member] |  |
Financing receivable, gross | 14,000 | 16,300
Financial Asset, Not Past Due [Member] |  |
Financing receivable, gross | $ 108,300 | $ 101,700

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