Note 4 - Loans Receivable - Activity in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Beginning balance	$ 6,715	$ 7,751
Provision for (recovery of) loan losses	1,828	(1,240)
Loans charged off	(485)	(132)
Recoveries	71	336
Total ending allowance balance	8,129	6,715
Commercial Portfolio Segment [Member]
Beginning balance	1,652	1,536
Provision for (recovery of) loan losses	1,032	119
Loans charged off	(156)	(93)
Recoveries	20	90
Total ending allowance balance	2,548	1,652
Consumer Portfolio Segment [Member]
Beginning balance	44	54
Provision for (recovery of) loan losses	50	17
Loans charged off	(61)	(29)
Recoveries	16	2
Total ending allowance balance	49	44
One-to-Four Family Residential Real Estate [Member] \| Real Estate Portfolio [Member]
Beginning balance	331	518
Provision for (recovery of) loan losses	15	(395)
Loans charged off	(76)	(3)
Recoveries	11	211
Total ending allowance balance	281	331
Multi-family Mortgage [Member] \| Real Estate Portfolio [Member]
Beginning balance	3,377	4,062
Provision for (recovery of) loan losses	616	(718)
Recoveries	20	33
Total ending allowance balance	4,013	3,377
Nonresidential Real Estate [Member] \| Real Estate Portfolio [Member]
Beginning balance	1,311	1,569
Provision for (recovery of) loan losses	111	(251)
Loans charged off	(192)	(7)
Recoveries	4
Total ending allowance balance	1,234	1,311
Construction and Land Loans [Member]
Beginning balance	0	12
Provision for (recovery of) loan losses	4	(12)
Loans charged off		0
Recoveries		0
Total ending allowance balance	$ 4	$ 0

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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-Name Accounting Standards Codification
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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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