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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Note 4 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Principal loan balance	$ 589,239		$ 563,517
Deferred loan origination fees and costs, net	1,220		1,213	$ 1,176
Allowance for credit losses	(7,515)	$ (7,323)	(6,772)	(6,394)	$ (6,245)	$ (6,083)
Loans, net	582,944		557,958
Residential Portfolio Segment [Member] \| One-to-four Family Loan [Member]
Principal loan balance	128,216		116,269
Deferred loan origination fees and costs, net	129
Allowance for credit losses	(1,469)	(1,414)
Residential Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Principal loan balance	57,401		57,872
Residential Portfolio Segment [Member] \| Multifamily [Member]
Principal loan balance	39,331		38,973
Deferred loan origination fees and costs, net	(14)
Allowance for credit losses	(614)	(381)
Construction [Member] \| One-to-four Family Residential Construction [Member]
Principal loan balance	17,657		16,575
Deferred loan origination fees and costs, net	0
Allowance for credit losses	(171)	(187)
Construction [Member] \| Other Construction, Development and Land [Member]
Principal loan balance	57,542		47,632
Deferred loan origination fees and costs, net	(7)
Allowance for credit losses	(460)	(489)
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Principal loan balance	169,310		161,362
Deferred loan origination fees and costs, net	(108)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Deferred loan origination fees and costs, net	1,231		1,204	1,168
Allowance for credit losses	(363)	(366)	(530)	(533)	$ (517)	$ (527)
Consumer Portfolio Segment [Member] \| Commercial Business [Member]
Principal loan balance	65,055		68,066
Consumer Portfolio Segment [Member] \| All Other Consumer Excluding Home Equity and Second Mortgage [Member]
Principal loan balance	54,727		56,768
Allowance for credit losses	$ (858)	$ (1,212)	$ (991)	$ (980)