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Note 4 - Loans Receivable - Loans Individually Evaluated for Impairment By Class (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Loan balance, with no allowance recorded	$ 9,178	$ 2,831
Recorded investment, with no allowance recorded	9,085	2,712
Partial charge-off, with no allowance recorded	50	49
One-to-four family residential real estate	3,841	2,178
Interest income recognized, with no allowance recorded	2	103
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member]
Loan balance, with no allowance recorded	87	752
Recorded investment, with no allowance recorded	89	752
Partial charge-off, with no allowance recorded	0	0
One-to-four family residential real estate	78	1,143
Interest income recognized, with no allowance recorded	2	29
Real Estate Portfolio [Member] | Multi-family Mortgage [Member]
Loan balance, with no allowance recorded	133	473
Recorded investment, with no allowance recorded	148	473
Partial charge-off, with no allowance recorded	0	0
One-to-four family residential real estate	49	590
Interest income recognized, with no allowance recorded	0	27
Real Estate Portfolio [Member] | Commercial leases [Member]
Loan balance, with no allowance recorded	8,958
Recorded investment, with no allowance recorded	8,848
Partial charge-off, with no allowance recorded	50
One-to-four family residential real estate	3,714
Interest income recognized, with no allowance recorded	$ 0
Commercial Portfolio Segment [Member]
Loan balance, with no allowance recorded		1,606
Recorded investment, with no allowance recorded		1,487
Partial charge-off, with no allowance recorded		49
One-to-four family residential real estate		445
Interest income recognized, with no allowance recorded		$ 47

X

- Definition

Amount of partial charge offs for impaired financing receivables for which there is no related allowance for credit losses

+ References

No definition available.

+ Details

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X

- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-17

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- Definition

Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

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X

- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-14A

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X

- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

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