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Note 3 - Loans - Summary of Loan Classes and an Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Loans	$ 930,194	$ 920,523	$ 880,089
Non-accrual loans	677	2,673
Accruing loans past due 90 days or more amounted	225	0
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	896	1,314
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	893	235
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	516	2,337
Financial Asset, Past Due [Member]
Loans	2,305	3,886
Financial Asset, Not Past Due [Member]
Loans	927,889	916,637
Real Estate 1 [Member] | Construction and Land Development [Member]
Loans	49,282	51,840	49,118
Non-accrual loans	40	1,045
Accruing loans past due 90 days or more amounted	0	0
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	115
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	20
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	40	1,045
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Past Due [Member]
Loans	40	1,180
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Not Past Due [Member]
Loans	49,242	50,660
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Loans	337,601	331,421	312,083
Non-accrual loans	567	530
Accruing loans past due 90 days or more amounted	209	0
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	885	1,033
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	435	60
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	398	207
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Past Due [Member]
Loans	1,718	1,300
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Not Past Due [Member]
Loans	335,883	330,121
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Loans	421,970	418,456	401,037
Non-accrual loans	70	13
Accruing loans past due 90 days or more amounted	0	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	109
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	393	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	62	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Past Due [Member]
Loans	455	109
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	421,515	418,347
Commercial and Industrial Loans [Member]
Loans	112,803	111,225	109,548
Non-accrual loans	0	1,085
Accruing loans past due 90 days or more amounted	16	0
Commercial and Industrial Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	31
Commercial and Industrial Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	55	130
Commercial and Industrial Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	16	1,085
Commercial and Industrial Loans [Member] | Financial Asset, Past Due [Member]
Loans	71	1,246
Commercial and Industrial Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	112,732	109,979
Consumer and Other Loans [Member]
Loans	8,538	7,581	$ 8,303
Non-accrual loans	0	0
Accruing loans past due 90 days or more amounted	0	0
Consumer and Other Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	11	26
Consumer and Other Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	10	25
Consumer and Other Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Consumer and Other Loans [Member] | Financial Asset, Past Due [Member]
Loans	21	51
Consumer and Other Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	$ 8,517	$ 7,530

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