Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary of Loans Receivable
Loans receivable	$ 16,198,082	$ 15,246,812
Allowance for credit losses	(192,757)	(182,283)	$ (172,665)	$ (158,243)
Loans receivable, net	16,005,325	15,064,529
Net deferred origination (fees) costs included in loans receivable	(25,577)	(25,882)
Net purchase accounting (discounts) premiums included in loans receivable	$ (13,802)	$ (17,832)
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Accrued interest receivable on loans	$ 67,362	$ 54,971
Residential Real Estate
Summary of Loans Receivable
Loans receivable	1,704,544	1,446,008
Allowance for credit losses	(22,325)	(19,683)	(16,458)	(9,604)
Commercial Real Estate
Summary of Loans Receivable
Loans receivable	10,303,306	9,797,047
Allowance for credit losses	(130,924)	(125,816)	(117,901)	(86,999)
Other Commercial
Summary of Loans Receivable
Loans receivable	2,901,863	2,799,668
Allowance for credit losses	(21,194)	(21,454)	(24,703)	(49,133)
Home Equity
Summary of Loans Receivable
Loans receivable	888,013	822,232
Allowance for credit losses	(11,766)	(10,759)	(8,566)	(8,182)
Other Consumer
Summary of Loans Receivable
Loans receivable	400,356	381,857
Allowance for credit losses	$ (6,548)	$ (4,571)	$ (5,037)	$ (4,325)