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Note 4 - Loans Receivable - Recorded Investment in Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Recorded investment	$ 16,413	$ 16,934
Loans past due over 90 days, still accruing	1	0
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member]
Recorded investment	107	126
Loans past due over 90 days, still accruing	0	0
Real Estate Portfolio [Member] | Multi-family Mortgage [Member]
Recorded investment	1,395	1,453
Loans past due over 90 days, still accruing	0	0
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member]
Recorded investment		393
Loans past due over 90 days, still accruing		0
Commercial Portfolio Segment [Member]
Recorded investment	14,911	14,960
Loans past due over 90 days, still accruing	0	0
Consumer Portfolio Segment [Member]
Recorded investment	0	2
Loans past due over 90 days, still accruing	$ 1	$ 0

X

- Definition

Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-80

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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X

- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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