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Note 7 - Loans and Related Allowance for Credit Losses (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Financing Receivable, Accrued Interest, after Allowance for Credit Loss |  | $ 5,500,000 |  |  | $ 5,500,000 |  |  |  | $ 5,500,000 |  |  |
Financing Receivable, Deferred Commitment Fee |  | 7,100,000 |  |  | 7,100,000 |  |  |  | 8,200,000 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease) |  |  |  |  | $ 112,000 |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Percentage |  |  |  |  | 0.50% |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1],[2] | 1,581,925,000 |  |  | $ 1,581,925,000 |  |  |  | 1,519,614,000 |  |  |
Mortgage Loans in Process of Foreclosure, Amount |  | 777,000 |  |  | 777,000 |  |  |  | 352,000 |  |  |
Financing Receivable, Nonaccrual, Interest Income |  | 440,000 |  | $ 171,000 | 857,000 |  | $ 300,000 |  |  |  |  |
Financing Receivable, Modified, Commitment to Lend |  | 628,000 |  |  | 628,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  | 12,000,000 |  | 0 | 12,000,000 |  | 0 |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 22,335,000 | [1],[2] | 21,795,000 | 22,335,000 | [1],[2] | 21,795,000 | $ 22,401,000 | $ 22,447,000 | [1],[2] | $ 21,069,000 | $ 21,693,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | $ (84,000) |  | 697,000 | $ (339,000) |  | 5,000 |  |  |  |  |
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 |  |  |  | Interest Receivable and Other Assets |  |  |
Threshold For Loans Evaluated For Impairment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 750,000 |  |  | $ 750,000 |  |  |  |  |  |  |
Threshold For Loans Evaluated For Impairment [Member] | Criticized Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 150,000 |  |  | 150,000 |  |  |  |  |  |  |
Unfunded Loan Commitment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 1,500,000 |  |  | 1,500,000 |  |  |  | $ 1,600,000 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 422,000 |  | 610,000 | 72,000 |  | 54,000 |  |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | (7,300,000) |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1],[2] | 196,645,000 |  |  | 196,645,000 |  |  |  | 181,447,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 2,538,000 |  | 2,058,000 | 2,538,000 |  | 2,058,000 | 2,288,000 | 2,100,000 |  | 2,060,000 | 2,668,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 250,000 |  | (2,000) | 425,000 |  | (621,000) |  |  |  |  |
Construction and Other [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 19,900,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1],[2] | 123,531,000 |  |  | 123,531,000 |  |  |  | 103,608,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 4,234,000 |  | 2,290,000 | 4,234,000 |  | 2,290,000 | 4,233,000 | 2,052,000 |  | 2,373,000 | 1,990,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 1,000 |  | (83,000) | 2,182,000 |  | 300,000 |  |  |  |  |
Commercial And Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 28,500,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1],[2] | 257,519,000 |  |  | 257,519,000 |  |  |  | 229,034,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 3,014,000 |  | 2,430,000 | 3,014,000 |  | 2,430,000 | $ 2,971,000 | $ 2,427,000 |  | $ 2,038,000 | $ 4,377,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | $ 42,000 |  | $ 384,000 | $ 422,000 |  | $ (1,963,000) |  |  |  |  |
[1] | Accrued interest of $5.5 million and $5.5 million at June 30, 2025 and December 31, 2024, 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 $7.1 million and $8.2 million at June 30, 2025 and December 31, 2024, respectively.

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