Note 10 - Subordinated Debentures - Subordinated Notes (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Face Value	$ 26,806
Carrying value	26,541
Commonwealth Statutory Trust III [Member]
Face Value	3,093
Carrying value	$ 3,062
Commonwealth Statutory Trust III [Member] | London Interbank Offered Rate (LIBOR) 1 [Member]
Index	2.85%
Commonwealth Statutory Trust IV [Member]
Face Value	$ 12,372
Carrying value	$ 12,250
Commonwealth Statutory Trust IV [Member] | London Interbank Offered Rate (LIBOR) 1 [Member]
Index	1.35%
Commonwealth Statutory Trust V [Member]
Face Value	$ 11,341
Carrying value	$ 11,229
Commonwealth Statutory Trust V [Member] | London Interbank Offered Rate (LIBOR) 1 [Member]
Index	1.40%