Note 1 - General (Details Textual) $ in Thousands	18 Months Ended
	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Number of Loan Modifications for COVID-19 Related Accommodations	0
Financing Receivable, Number of PPP Loans	1,259
Financing Receivable, PPP Loans, Amount	$ 83,023
Financing Receivable, Number of PPP Loans Forgiven or Paid Off	1,039
Loans and Leases Receivable, Net Amount, Total	$ 789,796	$ 760,318
SBA CARES Act Paycheck Protection Program [Member]
Financing Receivable, Loans Forgiven or Paid Off, Amount	70,228
Loans and Leases Receivable, Net Amount, Total	$ 12,086