Note 4 - Loans Receivables and Allowance for Loan and Lease Losses - Non-accrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Loans receivable, gross	$ 859,107	$ 739,488
Business Activities Loans [Member]
Loans receivable, gross	859,107	739,488
Non-accruing loans	23,324	23,095
Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	835,783	716,393
Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross	448,884	365,247
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	448,884	365,247
Non-accruing loans	15,366	15,704
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	433,518	349,543
Residential Portfolio Segment [Member]
Loans receivable, gross	138,739	158,591
Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	138,739	158,591
Non-accruing loans	3,087	3,148
Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	135,652	155,443
Commercial Portfolio Segment [Member]
Loans receivable, gross	133,281	122,810
Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	133,281	122,810
Non-accruing loans	4,726	4,101
Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	128,555	118,709
Consumer Portfolio Segment [Member]
Loans receivable, gross	122,858	59,364
Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	122,858	59,364
Non-accruing loans	145	142
Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	122,713	59,222
Substandard [Member] | Business Activities Loans [Member]
Loans receivable, gross	27,009	32,691
Non-accruing loans	23,324	23,095
Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	3,685	9,596
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	16,819	23,068
Non-accruing loans	15,366	15,704
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	1,453	7,364
Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	3,087	3,148
Non-accruing loans	3,087	3,148
Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	6,935	6,310
Non-accruing loans	4,726	4,101
Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	2,209	2,209
Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	168	165
Non-accruing loans	145	142
Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	23	23
Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Non-accruing loans		4,101
Financial Asset, 30 to 59 Days Past Due [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	4,796	939
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	1,651	696
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	231	0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	2,914	243
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Non-Accrual Loans [Member] | Business Activities Loans [Member]
Loans receivable, gross	825	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	2,749	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	853	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	1,896	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	682	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	143
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross		0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	108	26
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	108	0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	26
Financial Asset, 60 to 89 Days Past Due [Member] | Non-Accrual Loans [Member] | Business Activities Loans [Member]
Loans receivable, gross	136	585
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	108	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	108	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	136	491
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	94
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	2
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	2
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-Accrual Loans [Member] | Business Activities Loans [Member]
Loans receivable, gross	12,900	20,609
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	6,537	15,704
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	1,795	2,419
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	4,447	2,458
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	121	28
Financial Asset, Past Due [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	4,904	967
Financial Asset, Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	1,651	696
Financial Asset, Past Due [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	231	0
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	3,022	243
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	28
Financial Asset, Past Due [Member] | Non-Accrual Loans [Member] | Business Activities Loans [Member]
Loans receivable, gross	13,861	21,194
Financial Asset, Past Due [Member] | Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	2,857	0
Financial Asset, Past Due [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	853	0
Financial Asset, Past Due [Member] | Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Past Due [Member] | Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	2,004	0
Financial Asset, Past Due [Member] | Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	6,537	15,704
Financial Asset, Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	2,477	2,419
Financial Asset, Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	4,726	2,949
Financial Asset, Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	121	122
Financial Asset, Not Past Due [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	830,879	715,426
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	431,867	348,847
Financial Asset, Not Past Due [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	135,421	155,443
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	125,533	118,466
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	122,713	59,194
Financial Asset, Not Past Due [Member] | Non-Accrual Loans [Member] | Business Activities Loans [Member]
Loans receivable, gross	9,463	1,901
Financial Asset, Not Past Due [Member] | Substandard [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	828	9,596
Financial Asset, Not Past Due [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	600	7,364
Financial Asset, Not Past Due [Member] | Substandard [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	0	0
Financial Asset, Not Past Due [Member] | Substandard [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	205	2,209
Financial Asset, Not Past Due [Member] | Substandard [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member] | Performing Financial Instruments [Member]
Loans receivable, gross	23	23
Financial Asset, Not Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	8,829	0
Financial Asset, Not Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	610	729
Financial Asset, Not Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	0	1,152
Financial Asset, Not Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Loans receivable, gross	$ 24	$ 20