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Note 18 - Fair Value Measurements and Fair Value of Financial Instruments - Schedule of Fair Value Hierarchy Level and Estimated Fair Value of Significant Financial Instruments (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Investment securities - AFS |  | $ 420,190,000 | $ 318,961,000
Investment securities - HTM |  | 4,948,000 | 5,097,000
Fair Value, Inputs, Level 3 [Member] | Interest Rate Lock Contracts [Member] |  |  |
Derivative assets, notional amount | [1] | 0 | 1,255,000
Derivative assets | [1] | 0 | 32,000
Fair Value, Inputs, Level 3 [Member] | Forward Mortgage Loan Sale Contracts [Member] |  |  |
Derivative assets, notional amount | [1] | 0 | 1,104,000
Derivative assets | [1] | 0 | 14,000
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Cash and due from banks |  | 257,745,000 | 431,373,000
Interest-earning deposits in other financial institutions |  | 600,000 | 600,000
Loans held for sale |  | 11,250,000 | 1,911,000
Accrued interest payable |  | 7,950,000 | 11,671,000
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investment securities - AFS |  | 420,190,000 | 318,961,000
Investment securities - HTM |  | 5,191,000 | 5,209,000
Investment in FHLB stock |  | 15,000 | 15,000
Deposits |  | 3,083,789,000 | 3,174,760,000
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Loans, net |  | 3,005,501,000 | 2,989,958,000
Equity securities (1) | [1] | 22,944,000 | 23,392,000
Servicing assets |  | 6,985,000 | 8,110,000
FHLB advances |  | 200,000,000 | 150,000,000
Long-term debt |  | 119,529,000 | 119,147,000
Subordinated debentures |  | 15,156,000 | 14,938,000
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] |  |  |
Accrued interest receivable (1) | [1] | 14,582,000 | 13,743,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Cash and due from banks |  | 257,745,000 | 431,373,000
Interest-earning deposits in other financial institutions |  | 600,000 | 600,000
Loans held for sale |  | 11,250,000 | 1,845,000
Accrued interest payable |  | 7,950,000 | 11,671,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investment securities - AFS |  | 420,190,000 | 318,961,000
Investment securities - HTM |  | 4,948,000 | 5,097,000
Investment in FHLB stock |  | 15,000 | 15,000
Deposits |  | 3,078,409,000 | 3,181,495,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Loans, net |  | 2,942,026,000 | 2,918,296,000
Equity securities (1) | [1] | 22,944,000 | 23,392,000
Servicing assets |  | 13,761,000 | 14,883,000
FHLB advances |  | 198,783,000 | 144,891,000
Long-term debt |  | 109,463,000 | 83,864,000
Subordinated debentures |  | 14,975,000 | 14,566,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] |  |  |
Accrued interest receivable (1) | [1] | $ 14,582,000 | $ 13,743,000
[1] | Included in “Accrued interest and other assets” on the consolidated balance sheets.

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