Note 14 - Assets and Liabilities Measured and Reported at Fair Value - Significant Unobservable Inputs (Details) - Appraisal Discount Method [Member] - Fair Value, Inputs, Level 3 [Member] - Impaired Loans [Member] $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Collateral dependent loans, fair value	$ 9,928	$ 20,637
Other real estate owned, fair value	$ 0	$ 677
Weighted Average [Member]
Impaired Loans, Measurement Input	0.238	0.233
Other Real Estate Owned, Measurement Input	0	0.656