Loans Receivable - Non-accrual (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Non-accrual loans
Non-accrual loans	$ 3,300	$ 3,618
Interest income recognized on non-accrual loans	23		$ 8
Non-accrual loans with no allowance for credit losses	3,188	3,577
Commercial business
Non-accrual loans
Non-accrual loans	412
Interest income recognized on non-accrual loans	1
Non-accrual loans with no allowance for credit losses	412
Residential \| One- to four-family
Non-accrual loans
Non-accrual loans	1,856	2,277
Interest income recognized on non-accrual loans	11		2
Non-accrual loans with no allowance for credit losses	1,744	2,277
Commercial \| Real estate - nonresidential
Non-accrual loans
Non-accrual loans	29	29
Interest income recognized on non-accrual loans	6
Non-accrual loans with no allowance for credit losses	29	29
Commercial \| Commercial business
Non-accrual loans
Non-accrual loans		397
Non-accrual loans with no allowance for credit losses		356
Consumer \| Home equity and junior liens
Non-accrual loans
Non-accrual loans	104	85
Non-accrual loans with no allowance for credit losses	104	85
Consumer \| Manufactured homes
Non-accrual loans
Non-accrual loans	322	323
Non-accrual loans with no allowance for credit losses	322	323
Consumer \| Automobile
Non-accrual loans
Non-accrual loans	118	120
Interest income recognized on non-accrual loans	2
Non-accrual loans with no allowance for credit losses	118	120
Consumer \| Student
Non-accrual loans
Non-accrual loans	28	25
Non-accrual loans with no allowance for credit losses	28	25
Consumer \| Recreational Vehicle
Non-accrual loans
Non-accrual loans	412	291
Interest income recognized on non-accrual loans	2		5
Non-accrual loans with no allowance for credit losses	412	291
Consumer \| Other consumer
Non-accrual loans
Non-accrual loans	19	71
Interest income recognized on non-accrual loans	1		$ 1
Non-accrual loans with no allowance for credit losses	$ 19	$ 71

The amount of accrued interest recognized on non accrual loans.

No definition available.

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- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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

+ References

Reference 1: 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

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

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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-Publisher FASB
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