v3.26.1
Borrowings - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Line Of Credit Facility [Line Items]          
Advance from the Federal Home Loan Bank $ 621,100,000   $ 621,100,000   $ 596,100,000
Interest expense on FHLBNY advances 5,300,000 $ 5,000,000 10,700,000 $ 10,500,000  
Federal Home Loan Bank of New York (FHLBNY) | Overnight Line of Credit Advance          
Line Of Credit Facility [Line Items]          
Advance from the Federal Home Loan Bank 0   0   0
Federal Reserve Bank of New York (FRBNY)          
Line Of Credit Facility [Line Items]          
Lines of credit 75,000,000   75,000,000   75,000,000
Federal Reserve Bank of New York (FRBNY) | Overnight Line of Credit Advance          
Line Of Credit Facility [Line Items]          
Advance from the Federal Home Loan Bank $ 0   $ 0   $ 0