Note 8 - Fair Value Measurements - Carrying Amount and Estimated Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Total available-for-sale debt securities, fair value	$ 327,506	$ 344,040
Loans held-for-sale	701	1,483
Reported Value Measurement [Member]
Cash and cash equivalents	78,085	111,949
Held-to-maturity securities	224,989	224,233
Total available-for-sale debt securities, fair value	327,506	344,040
Restricted investments in bank stock	3,968	3,905
Loans and leases, net	1,708,843	1,666,292
Loans held-for-sale	691	1,457
Accrued interest receivable	9,877	9,092
Interest rate swaps	216	171
Short-term borrowings	98,120	117,000
Secured borrowings	7,237	7,372
Accrued interest payable	3,260	3,042
Interest rate swaps	551	2,332
Reported Value Measurement [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,899,385	1,945,456
Reported Value Measurement [Member] | Time Deposits [Member]
Deposits	269,745	212,969
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	78,085	111,949
Held-to-maturity securities	193,627	197,176
Total available-for-sale debt securities, fair value	327,506	344,040
Restricted investments in bank stock	3,968	3,905
Loans and leases, net	1,553,463	1,532,195
Loans held-for-sale	701	1,483
Accrued interest receivable	9,877	9,092
Interest rate swaps	216	171
Short-term borrowings	98,128	117,010
Secured borrowings	7,803	8,067
Accrued interest payable	3,260	3,042
Interest rate swaps	551	2,332
Estimate of Fair Value Measurement [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,899,385	1,945,456
Estimate of Fair Value Measurement [Member] | Time Deposits [Member]
Deposits	267,215	210,423
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	78,085	111,949
Held-to-maturity securities	0	0
Total available-for-sale debt securities, fair value	0	0
Restricted investments in bank stock	0	0
Loans and leases, net	0	0
Loans held-for-sale	0	0
Accrued interest receivable	0	0
Interest rate swaps	0	0
Short-term borrowings	0	0
Secured borrowings	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Deposits with No Stated Maturities [Member]
Deposits	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Time Deposits [Member]
Deposits	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0	0
Held-to-maturity securities	193,627	197,176
Total available-for-sale debt securities, fair value	327,506	344,040
Restricted investments in bank stock	3,968	3,905
Loans and leases, net	0	0
Loans held-for-sale	701	1,483
Accrued interest receivable	9,877	9,092
Interest rate swaps	216	171
Short-term borrowings	98,128	117,010
Secured borrowings	0	0
Accrued interest payable	3,260	3,042
Interest rate swaps	551	2,332
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,899,385	1,945,456
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member]
Deposits	267,215	210,423
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	0	0
Held-to-maturity securities	0	0
Total available-for-sale debt securities, fair value	0	0
Restricted investments in bank stock	0	0
Loans and leases, net	1,553,463	1,532,195
Loans held-for-sale	0	0
Accrued interest receivable	0	0
Interest rate swaps	0	0
Short-term borrowings	0	0
Secured borrowings	7,803	8,067
Accrued interest payable	0	0
Interest rate swaps	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Deposits with No Stated Maturities [Member]
Deposits	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Time Deposits [Member]
Deposits	$ 0	$ 0