Note 1 - Nature of Business and Summary of Significant Accounting Policies - Schedule of New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
ACL	$ (6,017)		$ (5,264)	$ (4,776)	$ (4,513)
Deferred tax assets, net	29,091		29,574
ACL on off-balance sheet exposures	636		0
Retained earnings	$ 101,335		102,525
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
ACL		$ (5,898)
Deferred tax assets, net		29,901
ACL on off-balance sheet exposures		677
Retained earnings		101,541
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
ACL		(634)	(635)
Deferred tax assets, net		327
ACL on off-balance sheet exposures		677	$ 677
Retained earnings		$ (984)