Note 13 - Borrowed Funds - Schedule of Short-term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance, Short-Term Debt	$ 302,957	$ 225,999
Federal Home Loan Bank Advances [Member]
Balance, Short-Term Debt	302,800	225,850
Average balance outstanding for the period	229,850	204,118
Maximum balance outstanding at any month end during period	$ 355,100	$ 298,900
Weighted average interest rate for the period	5.53%	2.37%
Weighted average interest rate for balances outstanding at December 31	5.64%	4.47%
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member]
Balance, Short-Term Debt	$ 157	$ 149
Average balance outstanding for the period	8,502	147
Maximum balance outstanding at any month end during period	$ 20,533	$ 149
Weighted average interest rate for the period	2.37%	1.87%
Weighted average interest rate for balances outstanding at December 31	5.50%	4.50%