Note 20 - Subordinated Notes (Details Textual) - Subordinated Notes [Member] - USD ($) $ in Millions	Jan. 14, 2022	Dec. 15, 2021
Subordinated Debt, Principal Amount		$ 75
Subordinated Borrowing, Interest Rate		3.25%
Subordinated Borrowing, Redemption Price, Percentage of Principal Amount		100.00%
Increase to Equity Capital From Issuance of Subordinated Long-term Debt		$ 70
Subsequent Event [Member]
Subordinated Debt, Principal Amount	$ 15
Increase to Equity Capital From Issuance of Subordinated Long-term Debt	$ 15
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		2.12%