Note 13 - Fair Value Measurements - Carrying Amount and Estimated Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Total available-for-sale debt securities, fair value	$ 344,040	$ 420,862
Loans held-for-sale	1,483	1,660
Reported Value Measurement [Member]
Cash and cash equivalents	111,949	29,091
Held-to-maturity securities	224,233	222,744
Total available-for-sale debt securities, fair value	344,040	420,862
Restricted investments in bank stock	3,905	5,268
Loans and leases, net	1,666,292	1,547,025
Loans held-for-sale	1,457	1,637
Accrued interest receivable	9,092	8,487
Interest rate swaps	171	213
Short-term borrowings	117,000	12,940
Secured borrowings	7,372	7,619
Accrued interest payable	3,042	448
Interest rate swaps	2,332	213
Reported Value Measurement [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,945,456	2,049,689
Reported Value Measurement [Member] | Time Deposits [Member]
Deposits	212,969	117,224
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	111,949	29,091
Held-to-maturity securities	197,176	187,280
Total available-for-sale debt securities, fair value	344,040	420,862
Restricted investments in bank stock	3,905	5,268
Loans and leases, net	1,532,195	1,440,151
Loans held-for-sale	1,483	1,660
Accrued interest receivable	9,092	8,487
Interest rate swaps	171	213
Short-term borrowings	117,010	12,940
Secured borrowings	8,067	7,275
Accrued interest payable	3,042	448
Interest rate swaps	2,332	213
Estimate of Fair Value Measurement [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,945,456	2,049,689
Estimate of Fair Value Measurement [Member] | Time Deposits [Member]
Deposits	210,423	113,252
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	111,949	29,091
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	197,176	187,280
Total available-for-sale debt securities, fair value	344,040	420,862
Restricted investments in bank stock	3,905	5,268
Loans and leases, net	0	0
Loans held-for-sale	1,483	1,660
Accrued interest receivable	9,092	8,487
Interest rate swaps	171	213
Short-term borrowings	117,010	12,940
Secured borrowings	0	0
Accrued interest payable	3,042	448
Interest rate swaps	2,332	213
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Deposits with No Stated Maturities [Member]
Deposits	1,945,456	2,049,689
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member]
Deposits	210,423	113,252
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	1,532,195	1,440,151
Loans held-for-sale	0	0
Accrued interest receivable	0	0
Interest rate swaps	0	0
Short-term borrowings	0	0
Secured borrowings	8,067	7,275
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