Note 9 - Loans (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Percentage Of Charge Off To Contractual Balances For Impaired Loans	18.30%		18.30%		14.10%
Financing Receivable, Troubled Debt Restructuring	$ 126		$ 126
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve		$ 0		$ 0
Financing Receivable, Modified, Subsequent Default	0		0
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	0		$ 0
Minimum [Member]
Period Loan Is In Payment Default (Day)			60 days
Maximum [Member]
Period Loan Is In Payment Default (Day)			90 days
Nonaccrual Loans [Member]
Impaired Financing Receivable, Recorded Investment	$ 69,000		$ 69,000		$ 68,900
Accruing Troubled Debt Restructuring [Member]
Financing Receivable, Troubled Debt Restructuring					15,100
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve					0
Non-accruing Troubled Debt Restructuring [Member]
Financing Receivable, Troubled Debt Restructuring					6,300
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve					$ 427