Loans Receivable, Net and Allowance for Credit Losses - Aging Analysis of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 2,909,642	$ 2,624,910	$ 2,482,206
Nonaccrual Loans	23,568	26,863
1-4 Family Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	426,343	434,374	452,350
Nonaccrual Loans	6,318	4,837
Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,057,612	756,542	693,670
Nonaccrual Loans	12,133	13,112
Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	535,521	526,210	404,512
Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	817,151	854,096	883,462
Nonaccrual Loans	5,040	8,247
Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,883,076	2,584,011
Current \| 1-4 Family Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	419,150	420,591
Current \| Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,045,479	740,222
Current \| Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	535,061	524,446
Current \| Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	812,111	845,849
Financial Asset, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,074	11,926
Financial Asset, 30 to 59 Days Past Due \| 1-4 Family Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		6,836
Financial Asset, 30 to 59 Days Past Due \| Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		3,208
Financial Asset, 30 to 59 Days Past Due \| Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,764
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,924	2,110
Financing Receivables, 60 to 89 Days Past Due \| 1-4 Family Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	875	2,110
Financing Receivables, 60 to 89 Days Past Due \| Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	460
Financing Receivables, 90 Days or More Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	23,568	26,863
Financing Receivables, 90 Days or More Past Due \| 1-4 Family Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	6,318	4,837
Financing Receivables, 90 Days or More Past Due \| Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	12,133	13,112
Financing Receivables, 90 Days or More Past Due \| Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	5,040	8,247
Business Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	72,438	53,063	47,372
Nonaccrual Loans	77	667
Business Loans \| Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	70,698	52,278
Business Loans \| Financial Asset, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,074	118
Business Loans \| Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	589
Business Loans \| Financing Receivables, 90 Days or More Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	77	667
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	577	625	$ 840
Consumer \| Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 577	$ 625