Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Summary of Loans Receivable
Loans receivable	$ 17,261,849	$ 16,198,082
Allowance for credit losses	(206,041)	(192,757)	$ (182,283)	$ (172,665)
Loans receivable, net	17,055,808	16,005,325
Net deferred origination (fees) costs included in loans receivable	(29,187)	(25,577)
Net purchase accounting (discounts) premiums included in loans receivable	(34,361)	(13,802)
Accrued interest receivable on loans	$ 73,935	$ 67,362
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Residential Real Estate
Summary of Loans Receivable
Loans receivable	$ 1,858,929	$ 1,704,544
Allowance for credit losses	(25,181)	(22,325)	(19,683)	(16,458)
Commercial Real Estate
Summary of Loans Receivable
Loans receivable	10,963,713	10,303,306
Allowance for credit losses	(138,545)	(130,924)	(125,816)	(117,901)
Other Commercial
Summary of Loans Receivable
Loans receivable	3,119,535	2,901,863
Allowance for credit losses	(24,400)	(21,194)	(21,454)	(24,703)
Home Equity
Summary of Loans Receivable
Loans receivable	930,994	888,013
Allowance for credit losses	(11,402)	(11,766)	(10,759)	(8,566)
Other Consumer
Summary of Loans Receivable
Loans receivable	388,678	400,356
Allowance for credit losses	$ (6,513)	$ (6,548)	$ (4,571)	$ (5,037)