Note 4 - Loans and Leases (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Unamortized Loan Cost (Fee)	$ 1,900
Loans and Leases Receivable, Deferred Income	877
Financing Receivable, Unamortized Purchase Premium (Discount)	257
Financing Receivable, Year One, Originated, Current Fiscal Year	61,562
Gain (Loss) on Sales of Loans, Net	$ 1	$ 0
Loans Still Classified as Non-accrual Status, Period of Past Due (Day)	90 days
Financing Receivable, Nonaccrual	$ 2,601		$ 2,763
Financing Receivable, 90 Days or More Past Due, Still Accruing	52		79
Evaluated Individually for Impairment, Non-accrued Loans Other Than TDRs, Threshold			100
Financing Receivable, Collectively Evaluated for Impairment	$ 1,161,942		1,115,743
Financing Receivable, Nonaccrual, Interest Income		$ 43
Financing Receivable, Modifications, Number of Contracts	0	0
Number of Real Estate Properties, Foreclosed	0	0
Nonaccrual Loans [Member]
Financing Receivable, Collectively Evaluated for Impairment			700
Small Business Administration [Member]
Loans Serviced for Others, Unpaid Principal Balance	$ 77,000		78,700
One- to Four-family Mortgages [Member]
Recorded Investment of Mortgage Loans Sold	100	$ 500
Gain (Loss) on Sales of Loans, Net	$ 1	$ 0
Residential Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts	1
Financing Receivable, Modifications	$ 79
Number of Real Estate Properties in OREO	3	2
Mortgage Loans in Process of Foreclosure, Amount	$ 212	$ 98
Commercial Equipment Financing [Member] | Simple Loans [Member]
Financing Receivable, Year One, Originated, Current Fiscal Year	108,000		79,300
Commercial Equipment Financing [Member] | Municipal Leases [Member]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 4,800		$ 4,400