Note 7 - Loans and Related Allowance for Credit Losses - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Loans	$ 1,504,531	$ 1,478,130
Real Estate [Member]
Loans	17,222	8,150
Blanket Lien [Member]
Loans	0	0
Investment and Cash [Member]
Loans	0	0
Other Collateral [Member]
Loans	12,318	0
Collateral Pledged [Member]
Loans	29,540	8,150
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member]
Loans	187,313	183,545
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member] \| Real Estate [Member]
Loans	2,224
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member] \| Blanket Lien [Member]
Loans	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member] \| Investment and Cash [Member]
Loans	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member] \| Other Collateral [Member]
Loans	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan [Member] \| Collateral Pledged [Member]
Loans	2,224
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member]
Loans	407,159	401,580
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member] \| Real Estate [Member]
Loans	14,381	8,150
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member] \| Blanket Lien [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member] \| Investment and Cash [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member] \| Other Collateral [Member]
Loans	11,105	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner occupied Loan [Member] \| Collateral Pledged [Member]
Loans	25,486	8,150
Residential Portfolio Segment [Member]
Loans	345,748	328,854
Residential Portfolio Segment [Member] \| Real Estate [Member]
Loans	617
Residential Portfolio Segment [Member] \| Blanket Lien [Member]
Loans	0
Residential Portfolio Segment [Member] \| Investment and Cash [Member]
Loans	0
Residential Portfolio Segment [Member] \| Other Collateral [Member]
Loans	0
Residential Portfolio Segment [Member] \| Collateral Pledged [Member]
Loans	617
Commercial And Industrial [Member]
Loans	213,172	$ 221,508
Commercial And Industrial [Member] \| Real Estate [Member]
Loans	0
Commercial And Industrial [Member] \| Blanket Lien [Member]
Loans	0
Commercial And Industrial [Member] \| Investment and Cash [Member]
Loans	0
Commercial And Industrial [Member] \| Other Collateral [Member]
Loans	1,213
Commercial And Industrial [Member] \| Collateral Pledged [Member]
Loans	$ 1,213