Credit Quality and Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Allowance for credit losses:
Beginning Balance	$ 33,142	$ 32,916	$ 32,916
Beginning Balance	34,767	35,616	35,616
Charge-offs	(413)	(226)	(1,363)
Recoveries	29	194
Provision (Reversal)	922	394
Provision (Reversal)	922	394
Ending Balance	33,680	33,278	33,142
Ending Balance	35,305	35,978	34,767
Unfunded lending commitments
Allowance for credit losses:
Beginning Balance	1,625	2,700	2,700
Charge-offs	0	0
Recoveries	0	0
Provision (Reversal)	0	0
Ending Balance	1,625	2,700	1,625
One- to four-family first mortgage
Allowance for credit losses:
Beginning Balance	5,062	4,430	4,430
Charge-offs	0	0	(14)
Recoveries	3	7
Provision (Reversal)	(203)	22
Ending Balance	4,862	4,459	5,062
Home equity loans and lines
Allowance for credit losses:
Beginning Balance	1,335	801	801
Charge-offs	0	0	0
Recoveries	0	0
Provision (Reversal)	(2)	(6)
Ending Balance	1,333	795	1,335
Commercial real estate
Allowance for credit losses:
Beginning Balance	14,503	13,521	13,521
Charge-offs	0	0	(21)
Recoveries	0	0
Provision (Reversal)	(182)	396
Ending Balance	14,321	13,917	14,503
Construction and land
Allowance for credit losses:
Beginning Balance	2,813	5,484	5,484
Charge-offs	0	0	(101)
Recoveries	0	0
Provision (Reversal)	456	(101)
Ending Balance	3,269	5,383	2,813
Multi-family residential
Allowance for credit losses:
Beginning Balance	1,499	1,090	1,090
Charge-offs	0	0	0
Recoveries	0	0
Provision (Reversal)	(28)	(2)
Ending Balance	1,471	1,088	1,499
Commercial and industrial
Allowance for credit losses:
Beginning Balance	7,138	6,861	6,861
Charge-offs	(233)	(195)	(865)
Recoveries	21	153
Provision (Reversal)	679	(80)
Ending Balance	7,605	6,739	7,138
Consumer
Allowance for credit losses:
Beginning Balance	792	729	729
Charge-offs	(180)	(31)	(362)
Recoveries	5	34
Provision (Reversal)	202	165
Ending Balance	$ 819	$ 897	$ 792

Financing Receivable, Allowance For Credit Loss, Excluding Accrued Interest, Including Lending Commitments

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- Definition

Financing Receivable, Excluding Accrued Interest, Credit Loss, Expense (Reversal), Including Lending Commitments

+ References

No definition available.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. 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 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. 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 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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