Note 9 - Securities Sold Under Agreements to Repurchase - Securities Sold Under Agreements to Repurchase (Details) - Securities Sold under Agreements to Repurchase [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Outstanding balance at end of period	$ 126,576		$ 126,576		$ 162,967
Average outstanding balance during the period	$ 128,493	$ 147,327	$ 143,655	$ 156,153
Weighted average interest rate at end of period	1.96%		1.96%		2.10%
Average interest rate during the period	1.95%	2.10%	2.02%	2.19%
Maximum outstanding at any month end during the period	$ 151,222	$ 152,948	$ 151,483	$ 179,428