Note 5 - Loans - Accruing Troubled Debt Restructurings (Details) - Accruing Troubled Debt Restructuring [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accruing TDRs	$ 15,145	$ 12,837
Payment Deferral [Member]
Accruing TDRs	7,560	5,270
Contractual Interest Rate Reduction [Member]
Accruing TDRs	445	5,771
Rate Reduction and Payment Deferral [Member]
Accruing TDRs	7,140	1,796
Commercial Portfolio Segment [Member]
Accruing TDRs	2,588	3,368
Commercial Portfolio Segment [Member] | Payment Deferral [Member]
Accruing TDRs	2,588	3,368
Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	0	0
Commercial Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	0	0
Commercial Real Estate Portfolio Segment [Member]
Accruing TDRs	8,646	6,128
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member]
Accruing TDRs	2,791	438
Commercial Real Estate Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	0	5,522
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	5,855	168
Residential Portfolio Segment [Member]
Accruing TDRs	3,911	3,341
Residential Portfolio Segment [Member] | Payment Deferral [Member]
Accruing TDRs	2,181	1,464
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Accruing TDRs	445	249
Residential Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Accruing TDRs	$ 1,285	$ 1,628