Note 6 - Loans and Allowance for Credit Losses on Loans (ACLL) (Details Textual) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Accrued Interest and Fees Receivable on Loans	$ 8,600,000	$ 7,200,000
Financing Receivable, Troubled Debt Restructuring	20,100,000	20,900,000
Current Troubled Debt Restructurings	18,100,000	18,700,000
Commitments to Lend Funds for Restructured Loans	0
Financing Receivable Troubled Debt Restructuring Individually Evaluated for Impairment Minimum	500,000
Loan Review Aggregate Exposure Amount on Nonhomogeneous Commercial Loan Relationships	5,000,000.0
Loans Collectively Evaluated Fully Guaranteed or Cash Secured Loans	$ 9,700,000	$ 19,800,000