Borrowings - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Line Of Credit Facility [Line Items]
Advance from the Federal Home Loan Bank	$ 521,100,000		$ 521,100,000		$ 571,100,000
Interest expense on FHLBNY advances	5,000,000	$ 7,100,000	10,500,000	$ 15,100,000
Overnight Line of Credit Advance
Line Of Credit Facility [Line Items]
Advance from the Federal Home Loan Bank	15,000,000		15,000,000		25,000,000
Federal Reserve Bank of New York (FRBNY)
Line Of Credit Facility [Line Items]
Outstanding term advances from FRBNY	$ 0		$ 0		$ 0