Note 9 - Other Assets - Summary of Major Components of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash surrender value of life insurance other than BOLI	$ 15,496	$ 17,875
Net deferred tax asset	54,145	24,340
Investments in tax credit partnerships	13,969	11,084
Swap assets	10,727	3,148
Prepaid assets	5,721	4,469
Trust fee receivable	3,354	2,868
Mortgage servicing rights	15,219	4,528	$ 2,710	$ 1,372
Other real estate owned	677	7,212
Other	15,680	10,478
Total other assets	$ 134,988	$ 86,002