Loans - Summary of Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	$ 31,118	$ 28,578
Individually evaluated for impairment, Allowance for loan losses	419	721
Allowance for loan losses	31,537	29,299	$ 21,089	$ 32,963
Total allowance for credit losses	33,712	30,671
Total allowance for credit losses	419	721
Total allowance for credit losses	34,131	31,392	22,904	34,388
Collectively evaluated for impairment, Recorded investment in loans	2,577,422	2,425,717
Individually evaluated for impairment, Recorded investment in loans	4,216	5,033
Total	2,581,638	2,430,750
Originated loans:
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,169,500	1,961,425
Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, Recorded investment in loans	1,400	1,500
Unfunded lending commitments
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	2,594	2,093
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	2,594	2,093	1,815	1,425
Unfunded lending commitments \| Originated loans:
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	2,600	2,100
Allowance for loan losses	534,700	520,700
One- to four-family first mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	3,255	2,883
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	3,255	2,883	1,944	3,065
Collectively evaluated for impairment, Recorded investment in loans	433,401	389,616
Individually evaluated for impairment, Recorded investment in loans	0	0
Total	433,401	389,616
Home equity loans and lines
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	688	624
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	688	624	508	676
Collectively evaluated for impairment, Recorded investment in loans	68,977	61,863
Individually evaluated for impairment, Recorded investment in loans	0	0
Total	68,977	61,863
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	14,604	13,264
Individually evaluated for impairment, Allowance for loan losses	201	550
Allowance for loan losses	14,805	13,814	10,454	18,851
Collectively evaluated for impairment, Recorded investment in loans	1,188,734	1,147,794
Individually evaluated for impairment, Recorded investment in loans	3,957	4,743
Total	1,192,691	1,152,537
Construction and land
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	5,292	4,680
Individually evaluated for impairment, Allowance for loan losses	123	0
Allowance for loan losses	5,415	4,680	3,572	4,155
Collectively evaluated for impairment, Recorded investment in loans	340,577	313,175
Individually evaluated for impairment, Recorded investment in loans	147	0
Total	340,724	313,175
Multi-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	474	572
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	474	572	457	1,077
Collectively evaluated for impairment, Recorded investment in loans	107,263	100,588
Individually evaluated for impairment, Recorded investment in loans	0	0
Total	107,263	100,588
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	6,071	5,853
Individually evaluated for impairment, Allowance for loan losses	95	171
Allowance for loan losses	6,166	6,024	3,520	4,276
Collectively evaluated for impairment, Recorded investment in loans	405,547	377,690
Individually evaluated for impairment, Recorded investment in loans	112	204
Total	405,659	377,894
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	734	702
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	734	702	$ 634	$ 863
Collectively evaluated for impairment, Recorded investment in loans	32,923	34,991
Individually evaluated for impairment, Recorded investment in loans	0	86
Total	$ 32,923	$ 35,077

Financing Receivable, Allowance for Credit Loss, Including Lending Commitments

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