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Note 3 - Loans - Summary of Loan Classes and an Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Loans	$ 994,720	$ 969,430	$ 952,499
Non-accrual loans	5,929	6,763
Accruing loans past due 90 days or more amounted	0	524
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	1,377	1,832
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,345	670
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	2,823	709
Financial Asset, Past Due [Member]
Loans	5,545	3,211
Financial Asset, Not Past Due [Member]
Loans	989,175	966,219
Real Estate 1 [Member] | Construction and Land Development [Member]
Loans	61,446	52,680	50,405
Non-accrual loans	34	38
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	183
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	183	4
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	34	38
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Past Due [Member]
Loans	217	225
Real Estate 1 [Member] | Construction and Land Development [Member] | Financial Asset, Not Past Due [Member]
Loans	61,229	52,455
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member]
Loans	351,004	344,369	340,773
Non-accrual loans	840	495
Accruing loans past due 90 days or more amounted	0	245
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	791	1,364
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	462	350
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	336	392
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Past Due [Member]
Loans	1,589	2,106
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Financial Asset, Not Past Due [Member]
Loans	349,415	342,263
Real Estate 1 [Member] | Other Real Estate Loans [Member]
Loans	449,746	447,272	433,177
Non-accrual loans	0	0
Accruing loans past due 90 days or more amounted	0	82
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	82
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Past Due [Member]
Loans	0	82
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	449,746	447,190
Commercial and Industrial Loans [Member]
Loans	114,823	113,074	117,130
Non-accrual loans	5,055	6,230
Accruing loans past due 90 days or more amounted	0	197
Commercial and Industrial Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	583	252
Commercial and Industrial Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	700	316
Commercial and Industrial Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	2,453	197
Commercial and Industrial Loans [Member] | Financial Asset, Past Due [Member]
Loans	3,736	765
Commercial and Industrial Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	111,087	112,309
Consumer and Other Loans [Member]
Loans	17,701	12,035	$ 11,014
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	3	33
Consumer and Other Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	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	3	33
Consumer and Other Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	$ 17,698	$ 12,002

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