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	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Collateral dependent loans	$ 4,275	$ 14,684
Other real estate owned		$ 190
Weighted Average [Member]
Collateral dependent loans, measurement input	0.32	0.226
Other real estate owned, measurement input		0.154

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

Mar. 31, 2026

USD ($)

Dec. 31, 2025

USD ($)

Collateral dependent loans

$ 4,275

$ 14,684

Other real estate owned

$ 190

Weighted Average [Member]

Collateral dependent loans, measurement input

0.32

0.226

Other real estate owned, measurement input

0.154