Loans Receivable, Net and Allowance for Credit Losses - Credit Risk Ratings by Loan Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Financing Receivable Recorded Investment [Line Items]
Total	$ 2,482,206	$ 2,308,020	$ 2,045,089
1-4 Family
Financing Receivable Recorded Investment [Line Items]
Total	452,350	472,416
Multifamily
Financing Receivable Recorded Investment [Line Items]
Total	693,670	670,159	545,323
Nonresidential
Financing Receivable Recorded Investment [Line Items]
Total	404,512	389,898	337,583
Construction and Land
Financing Receivable Recorded Investment [Line Items]
Total	883,462	733,660	641,879
Business Loans
Financing Receivable Recorded Investment [Line Items]
Total	47,372	40,849	30,222
Consumer
Financing Receivable Recorded Investment [Line Items]
Total	840	1,038	$ 5,305
Pass
Financing Receivable Recorded Investment [Line Items]
Total	2,439,152	2,260,150
Pass | 1-4 Family
Financing Receivable Recorded Investment [Line Items]
Total	440,256	461,043
Pass | Multifamily
Financing Receivable Recorded Investment [Line Items]
Total	674,549	650,526
Pass | Nonresidential
Financing Receivable Recorded Investment [Line Items]
Total	403,167	387,496
Pass | Construction and Land
Financing Receivable Recorded Investment [Line Items]
Total	874,551	720,422
Pass | Business Loans
Financing Receivable Recorded Investment [Line Items]
Total	45,791	39,628
Pass | Consumer
Financing Receivable Recorded Investment [Line Items]
Total	838	1,035
Special Mention
Financing Receivable Recorded Investment [Line Items]
Total	15,975	20,580
Special Mention | 1-4 Family
Financing Receivable Recorded Investment [Line Items]
Total	6,333	5,507
Special Mention | Multifamily
Financing Receivable Recorded Investment [Line Items]
Total	6,327	8,270
Special Mention | Nonresidential
Financing Receivable Recorded Investment [Line Items]
Total	940	2,402
Special Mention | Construction and Land
Financing Receivable Recorded Investment [Line Items]
Total	924	3,180
Special Mention | Business Loans
Financing Receivable Recorded Investment [Line Items]
Total	1,451	1,221
Substandard
Financing Receivable Recorded Investment [Line Items]
Total	27,079	27,290
Substandard | 1-4 Family
Financing Receivable Recorded Investment [Line Items]
Total	5,761	5,866
Substandard | Multifamily
Financing Receivable Recorded Investment [Line Items]
Total	12,794	11,363
Substandard | Nonresidential
Financing Receivable Recorded Investment [Line Items]
Total	405
Substandard | Construction and Land
Financing Receivable Recorded Investment [Line Items]
Total	7,987	10,058
Substandard | Business Loans
Financing Receivable Recorded Investment [Line Items]
Total	130
Substandard | Consumer
Financing Receivable Recorded Investment [Line Items]
Total	$ 2	$ 3