Loans - Amortized Cost of Collateral (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,708,658	$ 6,747,873
Basis adjustments	(943)	2,025
Portfolio Layer Hedges on Closed Portfolio of Loans \| Designated as hedging instrument
Accounts, Notes, Loans and Financing Receivable [Line Items]
Basis adjustments	900	2,000
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	42,406	22,896
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	8,626	11,101
Multi-family Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,493,038	2,531,613
Multi-family Residential Portfolio Segment [Member] \| Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	13,843	11,707
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,989,456	1,974,622
Commercial Real Estate \| Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	23,708	6,376
1-4 Family Mixed-Use Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	496,267	513,938
1-4 Family Mixed-Use Property \| Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	441	117
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	259,005	244,593
1-4 Family Residential \| Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,657	812
Construction Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	46,587	60,114
Small Business Administration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	15,707	20,195
Small Business Administration \| Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,526	2,531
Commercial Business and Other Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,408,598	1,402,798
Commercial Business and Other Portfolio Segment \| Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,757	3,884
Commercial Business and Other Portfolio Segment \| Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,100	$ 8,570