Note 7 - Derivatives and Hedging Activities - Significantly Impact of operations (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivative Assets	$ 177,631	$ 222,220
Derivative Liabilities.	200,701	225,135
Interest rate swap
Derivative Assets	166,614	221,055
Derivative Liabilities.	166,614	221,055
Non Designated
Derivative Assets	2,213	238
Non Designated | Interest rate swap
Derivative Asset, Notional Amount	2,528,949	2,024,599
Derivative Assets	166,614	221,055
Derivative Liability, Notional Amount	2,528,949	2,024,599
Derivative Liabilities.	$ 166,614	$ 221,055