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Note 16 - Fair Value Measurements - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Securities available-for-sale | $ 736,389 | $ 786,438
Reported Value Measurement [Member] |  |
Securities available-for-sale | 736,389 | 786,438
Estimate of Fair Value Measurement [Member] |  |
Securities available-for-sale | 736,389 | 786,438
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] |  |
Cash and cash equivalents | 55,101 | 27,884
Accrued income receivable | 12,953 | 11,275
Securities sold under agreements to repurchase | 53,994 | 40,676
Accrued interest payable | 4,710 | 666
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] |  |
Cash and cash equivalents | 55,101 | 27,884
Accrued income receivable | 12,953 | 11,275
Securities sold under agreements to repurchase | 53,994 | 40,676
Accrued interest payable | 4,710 | 666
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] |  |
Interest-bearing time deposits | 8,904 | 14,669
FHLB and FRB stock | 3,086 | 4,613
Loans receivable, net | 1,277,812 | 1,226,011
Loans held for sale | 124 | 154
Derivative financial instruments | 1,225 | 1,096
Deposits | 1,811,831 | 1,897,957
FHLB advances and other borrowings | 110,588 | 39,120
Derivative financial instruments | 745 | 0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] |  |
Interest-bearing time deposits | 8,444 | 14,340
FHLB and FRB stock | 3,086 | 4,613
Loans receivable, net | 1,224,446 | 1,170,948
Loans held for sale | 124 | 154
Derivative financial instruments | 1,225 | 1,096
Deposits | 1,812,718 | 1,895,473
FHLB advances and other borrowings | 110,376 | 38,991
Derivative financial instruments | $ 745 | $ 0

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