Note 4 - Derivatives - Cash Flow Hedges Included in Consolidated Statements of Condition (Details) - Interest Rate Swap [Member] - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivative, notional amount	$ 700,000	$ 475,000
Derivative, fair value	$ 54,041	$ 3,347