Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Significant Unobservable Inputs (Details) - Impaired Loans [Member] - Fair Value, Inputs, Level 3 [Member] - Appraisal Discount Method [Member] $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Collateral dependent loans	$ 7,165	$ 13,561
Other real estate owned	$ 10	$ 10
Weighted Average [Member]
Impaired Loans, Measurement Input	0.21	0.18
Other Real Estate Owned, Measurement Input	0.93	0.93