Note 4 - Goodwill (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 07, 2022	Dec. 31, 2021
Goodwill	$ 194,074	$ 202,524	$ 194,074	$ 202,524	$ 194,074	$ 194,074	$ 202,524		$ 135,830
Goodwill, Written off Related to Sale of Business Unit	(0)	$ (0)	(0)	$ (0)
Landmark Financial Advisors, LLC (LFA) [Member]
Goodwill, Written off Related to Sale of Business Unit					8,500
Commonwealth [Member]
Goodwill	58,244		58,244		58,244			$ 67,000
Total Goodwill [Member]
Goodwill	194,000		194,000		194,000
Commercial Banking [Member]
Goodwill	172,000		172,000		172,000
WM&T [Member]
Goodwill	$ 22,000		$ 22,000		$ 22,000