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Note 14 - Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal									$ 9,883	$ 8,546	$ 10,048
State									1,648	1,563	1,643
Total current tax expense									11,531	10,109	11,691
Federal									1,800	4,677	(1,266)
State									164	574	(239)
Total deferred tax expense (benefit)									1,964	5,251	(1,505)
Total income tax expense	$ 3,076	$ 4,111	$ 3,423	$ 2,885	$ 3,037	$ 3,816	$ 4,077	$ 4,430	$ 13,495	$ 15,360	$ 10,186