Note 11 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income before income tax expense	$ 26,457	$ 23,183	$ 25,744	$ 23,083	$ 25,486	$ 28,635	$ 28,831	$ 34,006	$ 98,467	$ 116,958	$ 171,224
Federal statutory rate									21.00%	21.00%	21.00%
Computed “expected” Federal income tax expense									$ 20,678	$ 24,561	$ 35,957
State tax, net of federal tax benefit									6,514	9,404	13,314
162M adjustment									469	779	777
Bank owned life insurance									(1,500)	(1,326)	(1,175)
Tax-exempt interest and dividends									(2,632)	(2,514)	(1,969)
Tax benefits from stock-based compensation									109	(66)	(417)
Other, net									1,036	(883)	(474)
Income tax expense	$ 6,086	$ 6,022	$ 6,688	$ 5,878	$ 6,213	$ 7,228	$ 7,437	$ 9,077	$ 24,674	$ 29,955	$ 46,013