Note 6 - Other Assets - Summary of Major Components of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Cash surrender value of life insurance other than BOLI	$ 21,667	$ 22,156
Net deferred tax asset	43,451	44,667
Investments in tax credit partnerships	189,268	194,643
Derivative assets	3,244	4,501
Prepaid assets	8,783	8,818
WM&T fees receivable	5,352	5,253
Mortgage servicing rights	9,776	10,189	$ 10,817	$ 11,333
Other real estate owned	190	190
Other	26,061	14,589
Total other assets	$ 307,792	$ 305,006

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