Note 5 - Loans - Accruing Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accruing Troubled Debt Restructuring [Member]
Accruing TDRs	$ 15,145
Accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs	7,560
Accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	445
Accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	7,140
Non-accruing Troubled Debt Restructuring [Member]
Accruing TDRs		$ 6,348
Non-accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs		6,348
Non-accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs		0
Non-accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs		0
Commercial Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member]
Accruing TDRs	2,588
Commercial Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs	2,588
Commercial Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	0
Commercial Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	0
Commercial Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member]
Accruing TDRs		3,629
Commercial Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs		3,629
Commercial Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs		0
Commercial Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs		0
Commercial Real Estate Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member]
Accruing TDRs	8,646	1,098
Commercial Real Estate Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs	2,791	1,098
Commercial Real Estate Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	0	0
Commercial Real Estate Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	5,855	0
Residential Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member]
Accruing TDRs	3,911
Residential Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs	2,181
Residential Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	445
Residential Portfolio Segment [Member] | Accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	$ 1,285
Residential Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member]
Accruing TDRs		1,621
Residential Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Payment Deferral [Member]
Accruing TDRs		1,621
Residential Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs		0
Residential Portfolio Segment [Member] | Non-accruing Troubled Debt Restructuring [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs		$ 0