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Note 7 - Loans and Related Allowance for Credit Losses (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Accrued Interest, after Allowance for Credit Loss |  | $ 5,500,000 |  | $ 5,500,000 |  |
Financing Receivable, Deferred Commitment Fee |  | 8,200,000 |  | 9,200,000 |  |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) |  | $ 754,000 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Percentage |  | 3.50% |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | [1],[2] | $ 1,519,614,000 |  | 1,478,130,000 |  |
Financing Receivable, Nonaccrual, Interest Income |  | 2,300,000 |  | 689,000 |  |
Financing Receivable, Allowance for Credit Loss |  | 22,447,000 | [1],[2] | 21,693,000 | [1],[2] | $ 14,438,000
Provision for Loan, Lease, and Other Losses |  | $ 2,190,000 |  | $ 1,842,000 |  |
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] |  | Interest Receivable and Other Assets |  | Interest Receivable and Other Assets |  |
Threshold For Loans Evaluated For Impairment [Member] |  |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | $ 750,000 |  |  |  |
Threshold For Loans Evaluated For Impairment [Member] | Criticized Relationships [Member] |  |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 150,000 |  |  |  |
Unfunded Loan Commitment [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  | 1,600,000 |  | $ 1,800,000 |  |
Provision for Loan, Lease, and Other Losses |  | $ 182,000 |  | $ 1,800,000 |  |
[1] | Accrued interest of $5.5 million and $5.5 million at December 31, 2024 and December 31, 2023, respectively, is excluded from amortized cost and presented in "accrued interest receivable and other assets" on the Consolidated Balance Sheets.
[2] | Unearned income, including net deferred loan fees and costs and unamortized premiums and discounts, totaled $8.2 million and $9.2 million at December 31, 2024 and 2023, respectively.

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