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Note 1 - Significant Accounting Policies - Noninterest Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Service Charges on Deposit and Sweep Accounts [Member]
Noninterest revenue	$ 6,842	$ 4,954	$ 5,952
Credit and Debit Card [Member]
Noninterest revenue	8,821	8,914	8,216
Payroll Processing [Member]
Noninterest revenue	3,058	2,509	2,178
Customer Service [Member]
Noninterest revenue	$ 797	$ 801	$ 852

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