Note 5 - Loans and Leases - Summary of Financing Receivables With Payment Default (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Principal Forgiveness [Member]
Modified, Subsequent Default	$ 0
Payment Deferral [Member]
Modified, Subsequent Default	0
Extended Maturity [Member]
Modified, Subsequent Default	65
Contractual Interest Rate Reduction [Member]
Modified, Subsequent Default	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Principal Forgiveness [Member]
Modified, Subsequent Default	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Payment Deferral [Member]
Modified, Subsequent Default	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Extended Maturity [Member]
Modified, Subsequent Default	65
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Contractual Interest Rate Reduction [Member]
Modified, Subsequent Default	$ 0