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Note 3 - Loans Receivable - Non-accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Non-accrual loans	$ 5,996	$ 5,665
Total non-accrual loans to total loans receivable	0.35%	0.34%
Total non-accrual loans to total assets	0.26%	0.26%
Residential Portfolio Segment [Member] | One to Four Family [Member]
Non-accrual loans	$ 5,674	$ 5,515
Residential Portfolio Segment [Member] | Multifamily [Member]
Non-accrual loans	182	0
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Non-accrual loans	14	150
Construction and Land Portfolio Segment [Member]
Non-accrual loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Non-accrual loans	126	0
Commercial Portfolio Segment [Member]
Non-accrual loans	0	0
Consumer Portfolio Segment [Member]
Non-accrual loans	$ 0	$ 0

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
-Subparagraph (a)
-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)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (3)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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X

- Definition

The percentage of nonaccrual loans to total assets.

+ References

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- Definition

The percentage of nonaccrual loans to total loans receivable.

+ References

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