Note 22 - Segments (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 07, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Goodwill, Ending Balance	$ 202,524		$ 135,830	$ 12,513	$ 12,513
Commonwealth [Member]
Goodwill, Ending Balance	66,694	$ 67,000	$ 0
Commercial Banking [Member]
Goodwill, Ending Balance	175,000
WM&T [Member]
Goodwill, Ending Balance	28,000
WM&T [Member] | Commonwealth [Member]
Goodwill, Ending Balance	67,000
Operating Segments [Member]
Goodwill, Ending Balance	203,000
Operating Segments [Member] | Commercial Banking [Member]
Goodwill, Ending Balance	175,000
Operating Segments [Member] | WM&T [Member]
Goodwill, Ending Balance	28,000
Operating Segments [Member] | WM&T [Member] | Commonwealth [Member]
Goodwill, Ending Balance	$ 67,000