Note 3 - Loans - Summary of Loan Classes and an Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Loans	$ 1,487,398	$ 1,449,745	$ 1,443,022
Non-accrual loans	4,737	4,654
Accruing loans past due 90 days or more amounted	0	0
Commercial and Industrial Loans [Member]
Loans	113,342	117,944	120,700
Non-accrual loans	2,329	2,615
Accruing loans past due 90 days or more amounted	0	0
Consumer and Other Loans [Member]
Loans	17,884	19,116	19,928
Non-accrual loans	0	0
Accruing loans past due 90 days or more amounted	0	0
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	1,541	2,722
Financial Asset, 30 to 59 Days Past Due [Member] \| Commercial and Industrial Loans [Member]
Loans	313	646
Financial Asset, 30 to 59 Days Past Due [Member] \| Consumer and Other Loans [Member]
Loans	42	12
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,363	1,400
Financial Asset, 60 to 89 Days Past Due [Member] \| Commercial and Industrial Loans [Member]
Loans	301	520
Financial Asset, 60 to 89 Days Past Due [Member] \| Consumer and Other Loans [Member]
Loans	1	23
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	2,725	2,308
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial and Industrial Loans [Member]
Loans	1,660	1,324
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Consumer and Other Loans [Member]
Loans	0	0
Financial Asset, Past Due [Member]
Loans	5,629	6,430
Financial Asset, Past Due [Member] \| Commercial and Industrial Loans [Member]
Loans	2,274	2,490
Financial Asset, Past Due [Member] \| Consumer and Other Loans [Member]
Loans	43	35
Financial Asset, Not Past Due [Member]
Loans	1,481,769	1,443,315
Financial Asset, Not Past Due [Member] \| Commercial and Industrial Loans [Member]
Loans	111,068	115,454
Financial Asset, Not Past Due [Member] \| Consumer and Other Loans [Member]
Loans	17,841	19,081
Construction and Land Development [Member] \| Real Estate 1 [Member]
Loans	113,289	88,424	78,169
Non-accrual loans	41	45
Accruing loans past due 90 days or more amounted	0	0
Construction and Land Development [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	0	30
Construction and Land Development [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	0	0
Construction and Land Development [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	18	45
Construction and Land Development [Member] \| Financial Asset, Past Due [Member] \| Real Estate 1 [Member]
Loans	18	75
Construction and Land Development [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate 1 [Member]
Loans	113,271	88,349
Secured by Multi-family Residential Properties [Member] \| Real Estate 1 [Member]
Loans	522,763	527,283	544,162
Non-accrual loans	2,367	1,994
Accruing loans past due 90 days or more amounted	0	0
Secured by Multi-family Residential Properties [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	1,020	2,034
Secured by Multi-family Residential Properties [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	915	857
Secured by Multi-family Residential Properties [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	1,047	939
Secured by Multi-family Residential Properties [Member] \| Financial Asset, Past Due [Member] \| Real Estate 1 [Member]
Loans	2,982	3,830
Secured by Multi-family Residential Properties [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate 1 [Member]
Loans	519,781	523,453
Other Real Estate Loans [Member] \| Real Estate 1 [Member]
Loans	720,120	696,978	$ 680,063
Non-accrual loans	0	0
Accruing loans past due 90 days or more amounted	0	0
Other Real Estate Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	166	0
Other Real Estate Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	146	0
Other Real Estate Loans [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Real Estate 1 [Member]
Loans	0	0
Other Real Estate Loans [Member] \| Financial Asset, Past Due [Member] \| Real Estate 1 [Member]
Loans	312	0
Other Real Estate Loans [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate 1 [Member]
Loans	$ 719,808	$ 696,978