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Loans Receivable and Allowance for Credit Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	$ 2,624,910	$ 2,308,020	$ 1,921,572
Deferred loan origination costs, net of fees	(203)	1,081
Allowance for credit losses	(25,449)	(22,502)	(26,154)	$ (34,592)
Loans receivable, net	2,599,258	2,286,599
1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	307,267	330,053	343,689
Allowance for credit losses	(2,786)	(4,148)	(4,415)	(3,863)
1-4 Family Residential Owner-Occupied
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	127,107	142,363	152,311
Allowance for credit losses	(1,087)	(1,784)	(2,012)	(1,723)
Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	756,542	670,159	550,559
Allowance for credit losses	(9,041)	(5,004)	(4,365)	(8,021)
Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	526,210	389,898	342,343
Allowance for credit losses	(4,353)	(2,697)	(3,176)	(2,724)
Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	854,096	733,660	503,925
Allowance for credit losses	(6,149)	(7,710)	(4,807)	(2,683)
Business Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	53,063	40,849	19,779
Allowance for credit losses	(2,017)	(1,113)	(531)	(120)
Consumer Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	625	1,038	8,966
Allowance for credit losses	(16)	(46)	$ (6,848)	$ (15,458)
Mortgage Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	2,571,222	2,266,133
Mortgage Loans \| 1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	307,267	330,053
Mortgage Loans \| 1-4 Family Residential Owner-Occupied
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	127,107	142,363
Mortgage Loans \| Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	756,542	670,159
Mortgage Loans \| Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	526,210	389,898
Mortgage Loans \| Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	854,096	733,660
Non-mortgage Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	53,688	41,887
Non-mortgage Loans \| Business Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	53,063	40,849
Non-mortgage Loans \| Consumer Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, gross	$ 625	$ 1,038