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Note 3 - Loans - Summary of Loan Classes and an Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Loans	$ 1,449,950	$ 1,466,595	$ 972,974
Non-accrual loans	4,864	6,971
Accruing loans past due 90 days or more amounted	0	365
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	4,903	2,436
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	803	650
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	1,972	365
Financial Asset, Past Due [Member]
Loans	7,678	3,451
Financial Asset, Not Past Due [Member]
Loans	1,442,272	1,463,144
Real Estate 1 [Member] | Construction and Land Development [Member]
Loans	81,596	84,480	53,364
Non-accrual loans	75	50
Accruing loans past due 90 days or more amounted	0	23
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	583	56
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	266	26
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	44	23
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Past Due [Member]
Loans	893	105
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Not Past Due [Member]
Loans	80,703	84,375
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Loans	549,502	547,167	347,014
Non-accrual loans	2,126	2,148
Accruing loans past due 90 days or more amounted	0	54
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	2,431	2,192
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	412	210
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	763	54
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Past Due [Member]
Loans	3,606	2,456
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Not Past Due [Member]
Loans	545,896	544,711
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Loans	665,682	672,162	445,085
Non-accrual loans	0	0
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	950	12
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	41
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Past Due [Member]
Loans	950	53
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	664,732	672,109
Commercial and Industrial Loans [Member]
Loans	132,396	141,333	113,562
Non-accrual loans	2,662	4,773
Accruing loans past due 90 days or more amounted	0	288
Commercial and Industrial Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	914	145
Commercial and Industrial Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	114	373
Commercial and Industrial Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	1,165	288
Commercial and Industrial Loans [Member] | Financial Asset, Past Due [Member]
Loans	2,193	806
Commercial and Industrial Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	130,203	140,527
Consumer and Other Loans [Member]
Loans	20,774	21,453	$ 13,949
Non-accrual loans	1	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	25	31
Consumer and Other Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	11	0
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	36	31
Consumer and Other Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	$ 20,738	$ 21,422

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