Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Summary of Loans Receivable
Loans receivable	$ 16,732,502	$ 16,198,082
Allowance for credit losses	(198,779)	(192,757)	$ (186,604)	$ (182,283)
Loans receivable, net	16,533,723	16,005,325
Net deferred origination (fees) costs included in loans receivable	(24,769)	(25,577)
Net purchase accounting (discounts) premiums included in loans receivable	(25,755)	(13,802)
Accrued interest receivable on loans	74,166	67,362
Residential real estate
Summary of Loans Receivable
Loans receivable	1,752,514	1,704,544
Allowance for credit losses	(24,166)	(22,325)	(19,974)	(19,683)
Commercial real estate
Summary of Loans Receivable
Loans receivable	10,672,269	10,303,306
Allowance for credit losses	(135,153)	(130,924)	(130,253)	(125,816)
Other commercial
Summary of Loans Receivable
Loans receivable	3,030,608	2,901,863
Allowance for credit losses	(22,094)	(21,194)	(21,164)	(21,454)
Home equity
Summary of Loans Receivable
Loans receivable	883,062	888,013
Allowance for credit losses	(10,999)	(11,766)	(10,570)	(10,759)
Other consumer
Summary of Loans Receivable
Loans receivable	394,049	400,356
Allowance for credit losses	$ (6,367)	$ (6,548)	$ (4,643)	$ (4,571)