Credit Quality and Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 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			(1,630)	(1,174)	(1,363)
Recoveries			212	431
Provision (Reversal)	$ 1,019	$ (229)	2,703	654
Provision (Reversal)			2,703	(316)
Ending Balance	34,427	32,827	34,427	32,827	33,142
Ending Balance	36,052	34,557	36,052	34,557	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	(970)
Ending Balance	1,625	1,730	1,625	1,730	1,625
One- to four-family first mortgage
Allowance for credit losses:
Beginning Balance			5,062	4,430	4,430
Charge-offs			(315)	0	(14)
Recoveries			3	11
Provision (Reversal)			(709)	778
Ending Balance	4,041	5,219	4,041	5,219	5,062
Home equity loans and lines
Allowance for credit losses:
Beginning Balance			1,335	801	801
Charge-offs			0	0	0
Recoveries			0	36
Provision (Reversal)			(195)	149
Ending Balance	1,140	986	1,140	986	1,335
Commercial real estate
Allowance for credit losses:
Beginning Balance			14,503	13,521	13,521
Charge-offs			(200)	(21)	(21)
Recoveries			0	0
Provision (Reversal)			(340)	1,303
Ending Balance	13,963	14,803	13,963	14,803	14,503
Construction and land
Allowance for credit losses:
Beginning Balance			2,813	5,484	5,484
Charge-offs			(126)	(102)	(101)
Recoveries			0	0
Provision (Reversal)			219	(2,292)
Ending Balance	2,906	3,090	2,906	3,090	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)			53	67
Ending Balance	1,552	1,157	1,552	1,157	1,499
Commercial and industrial
Allowance for credit losses:
Beginning Balance			7,138	6,861	6,861
Charge-offs			(614)	(765)	(865)
Recoveries			184	334
Provision (Reversal)			3,306	394
Ending Balance	10,014	6,824	10,014	6,824	7,138
Consumer
Allowance for credit losses:
Beginning Balance			792	729	729
Charge-offs			(375)	(286)	(362)
Recoveries			25	50
Provision (Reversal)			369	255
Ending Balance	$ 811	$ 748	$ 811	$ 748	$ 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/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
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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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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
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-Section 50
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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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-Section 50
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-Publisher FASB
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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
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-Section 50
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