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Note 10 - Commitments and Contingencies (Details Textual) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss | $ 31,479,000 |  | $ 31,534,000
Other Liabilities | 40,582,000 |  | 35,737,000
Holdback Reserve For Guaranteed Loans [Member] |  |  |
Other Liabilities | 1,900,000 |  | 2,100,000
Federal Home Loan Bank of Des Moines [Member] |  |  |
Loans Serviced | $ 8,900,000 |  |
Amount to Outstanding Credit Enhancement (CE) Obligation, Percentage | 10.00% |  |
Escrow Holdback Relative to Outstanding Credit Enhancement (CE) Obligation | $ 39,000 |  |
Federal Home Loan Bank of Des Moines [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Loans Serviced | 0 |  | 0
Federal Home Loan Bank of Des Moines [Member] | Recourse [Member] |  |  |
First Loss Account (FLA) | 581,000 |  |
Credit Enhancement (CE) Obligation | $ 389,000 |  |
Credit Enhancement (CE) Obligation, Percentage of Outstanding Loans | 4.40% |  |
Unfunded Loan Commitment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | $ 1,500,000 |  | $ 1,500,000
Financing Receivable, Allowance for Credit Loss, Recovery | $ 22,000 | $ 249,000 |

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