Note 5 - Allowance for Credit Losses on Loans and Nonperforming Assets - Financing Receivable, Troubled Debt Restructurings (Details) - Commercial Real Estate Portfolio Segment [Member] - Commercial Real Estate, Owner Occupied [Member] - Interest Only Payments [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
amortized cost	$ 6,396	$ 6,396
Percentage	4.48%	5.46%
Commercial real estate owner-occupied (Month)	3 months	6 months