Note 12 - Debt - Subordinated Borrowings (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Connecticut Statutory Trust I [Member]
Principal	$ 15.0
Connecticut Statutory Trust I [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Connecticut Statutory Trust II [Member]
Principal	$ 17.5
Connecticut Statutory Trust II [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.10%
Connecticut Statutory Trust III [Member]
Principal	$ 20.0
Connecticut Statutory Trust III [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3.95%
Delaware Statutory Trust III [Member]
Principal	$ 15.0
Delaware Statutory Trust III [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.20%
Delaware Statutory Trust IV [Member]
Principal	$ 10.0
Delaware Statutory Trust IV [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3.85%
Delaware Statutory Trust VI [Member]
Principal	$ 13.0
Delaware Statutory Trust VI [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%