Loans Receivable and Allowance for Credit Losses - Aging Analysis of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 2,005,418	$ 1,921,572
Nonaccrual Loans	13,135	12,726
90 Days or More Accruing	230
1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	339,331	343,689
Nonaccrual Loans	400	793
1-4 Family Residential Owner-Occupied
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	150,842	152,311
Nonaccrual Loans	1,873	2,130
Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	545,825	550,559
Nonaccrual Loans	4,098	2,979
Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	327,350	342,343
Nonaccrual Loans	441
Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	608,665	503,925
Nonaccrual Loans	6,177	6,659
Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,986,575	1,905,820
Current | 1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	338,650	342,896
Current | 1-4 Family Residential Owner-Occupied
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	148,969	150,181
Current | Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	540,088	546,471
Current | Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	324,392	342,343
Current | Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	602,488	497,266
Financial Asset, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,155	2,011
Financial Asset, 30 to 59 Days Past Due | Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,109
Financial Asset, 30 to 59 Days Past Due | Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,517	0
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,323	1,015
Financing Receivables, 60 to 89 Days Past Due | 1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	281
Financing Receivables, 60 to 89 Days Past Due | Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,639
Financing Receivables, 90 Days or More Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	13,365	12,726
Financing Receivables, 90 Days or More Past Due | 1-4 Family Residential Investor Owned
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	400	793
Financing Receivables, 90 Days or More Past Due | 1-4 Family Residential Owner-Occupied
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,873	2,130
Financing Receivables, 90 Days or More Past Due | Multifamily Residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	4,098	2,979
Financing Receivables, 90 Days or More Past Due | Nonresidential Properties
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	441
Financing Receivables, 90 Days or More Past Due | Construction and Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	6,177	6,659
Business Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	26,664	19,779
Nonaccrual Loans	146	165
Business Loans | Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	26,005	19,240
Business Loans | Financial Asset, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	274	366
Business Loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	9	8
Business Loans | Financing Receivables, 90 Days or More Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	376	165
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	6,741	8,966
90 Days or More Accruing	230
Consumer | Current
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	5,983	7,423
Consumer | Financial Asset, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	364	536
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 394	$ 1,007