Note 13 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Commitments To Extend Notional Amount	$ 3,809,999	$ 3,470,296
Commitments to Fund Fixed Rate Loans	48,400	63,400
Commitments to Fund Adjustable Rate Loans	$ 3,760,000	$ 3,410,000