Note 13 - Fair Value Measurements - Estimated Fair Values of the Company's Financial Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale debt securities	$ 442,120	$ 450,814
Equity securities, at fair value	4,373	4,786
Reported Value Measurement [Member]
Available-for-sale debt securities	442,120	450,814
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	70,589	107,868
Equity securities, at fair value	4,373	4,786
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Restricted stock	9,364	8,814
Accrued interest receivable	7,590	7,085
Derivative assets	3,501	1,919
Deposits	1,481,294	1,528,982
Borrowed funds	229,856	200,272
Accrued interest payable	1,284	1,355
Derivative liabilities	1,623	2,726
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Loans and leases, net	1,237,770	1,208,279
Servicing rights	158	175
Estimate of Fair Value Measurement [Member]
Available-for-sale debt securities	442,120	450,814
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	70,589	107,868
Equity securities, at fair value	4,373	4,786
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Restricted stock	9,364	8,814
Accrued interest receivable	7,590	7,085
Derivative assets	4,170	2,088
Deposits	1,478,585	1,526,672
Borrowed funds	228,818	200,724
Accrued interest payable	1,284	1,355
Derivative liabilities	1,650	2,691
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Loans and leases, net	1,174,433	1,152,257
Servicing rights	$ 570	$ 570