Note 3 - Loans - Summary of Troubled Debt Restructurings of Loans (Details) - Commercial Real Estate Portfolio Segment [Member] - Owner Occupied Commercial Real Estate [Member] - Extended Maturity [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Amortized cost basis	$ 2,422
% of total loan type	0.58%
financial effect (Year)	1 year