Borrowed Funds - Schedule of Long-Term Borrowings (Details) - Long-term borrowings - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
FHLB advances, net	$ 2,463,604	$ 2,526,608
Subordinated debt, net	442,294	647,547
Total long-term borrowings	$ 2,905,898	$ 3,174,155