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Note 7 - Loans and Related Allowance for Credit Losses (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023
Financing Receivable, Accrued Interest, after Allowance for Credit Loss |  | $ 5,900,000 |  |  | $ 5,900,000 |  |  |  | $ 5,500,000 |  |  |
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 |  |  |
Financing Receivable, Deferred Commitment Fee |  | $ 6,600,000 |  |  | $ 6,600,000 |  |  |  | $ 8,200,000 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease) |  |  |  |  | $ 582,000 |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Percentage |  |  |  |  | 2.60% |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 1,607,024,000 | [1],[4] |  | $ 1,607,024,000 | [1],[4] |  |  | 1,519,614,000 |  |  |
Mortgage Loans in Process of Foreclosure, Amount |  | 1,300,000 |  |  | 1,300,000 |  |  |  | 352,000 |  |  |
Financing Receivable, Nonaccrual, Interest Income |  | 474,000 |  | $ 852,000 | 1,300,000 |  | $ 1,200,000 |  |  |  |  |
Financing Receivable, Modified, Commitment to Lend |  | 491,000 |  | 0 | 491,000 |  | 0 |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 23,029,000 | [1],[2],[3],[4] | 22,526,000 | 23,029,000 | [1],[2],[3],[4] | 22,526,000 | $ 22,335,000 | 22,447,000 | [2],[3] | $ 21,795,000 | $ 21,693,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 587,000 |  | 2,113,000 | 248,000 |  | 2,118,000 |  |  |  |  |
Construction and Other [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 1,200,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 104,843,000 | [1],[4] |  | 104,843,000 | [1],[4] |  |  | 103,608,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 3,513,000 |  | 2,131,000 | 3,513,000 |  | 2,131,000 | 4,234,000 | 2,052,000 |  | 2,290,000 | 1,990,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | (721,000) |  | (159,000) | 1,461,000 |  | 141,000 |  |  |  |  |
Commercial And Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 40,400,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 269,422,000 | [1],[4] |  | 269,422,000 | [1],[4] |  |  | 229,034,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 3,426,000 |  | 2,412,000 | 3,426,000 |  | 2,412,000 | 3,014,000 | 2,427,000 |  | 2,430,000 | 4,377,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 453,000 |  | 8,000 | 875,000 |  | (1,954,000) |  |  |  |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 12,700,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 366,307,000 | [1],[4] |  | 366,307,000 | [1],[4] |  |  | 353,442,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 5,989,000 |  | 5,110,000 | 5,989,000 |  | 5,110,000 | 5,801,000 | 5,236,000 |  | 4,891,000 | 5,450,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 171,000 |  | 219,000 | 701,000 |  | (340,000) |  |  |  |  |
Non-owner occupied Loan [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | (21,900,000) |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 390,354,000 | [1],[4] |  | 390,354,000 | [1],[4] |  |  | 412,291,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 4,919,000 |  | 8,356,000 | 4,919,000 |  | 8,356,000 | 4,628,000 | 8,364,000 |  | 7,981,000 | 4,480,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 291,000 |  | 1,716,000 | (3,434,000) |  | 5,217,000 |  |  |  |  |
Owner Occupied Loan [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  |  |  | 40,200,000 |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2],[3] | 221,600,000 | [1],[4] |  | 221,600,000 | [1],[4] |  |  | 181,447,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 2,941,000 |  | 2,190,000 | 2,941,000 |  | 2,190,000 | $ 2,538,000 | 2,100,000 |  | $ 2,058,000 | $ 2,668,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 311,000 |  | 177,000 | 736,000 |  | (444,000) |  |  |  |  |
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 |  | 1,300,000 |  |  | 1,300,000 |  |  |  | $ 1,600,000 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | $ 195,000 |  | $ 121,000 | $ 267,000 |  | $ 67,000 |  |  |  |  |
[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] | Accrued interest of $5.9 million and $5.5 million at September 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.
[3] | Unearned income, including net deferred loan fees and costs and unamortized premiums and discounts, totaled $6.6 million and $8.2 million at September 30, 2025 and December 31, 2024, respectively.
[4] | 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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