Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Summary of Loans Receivable
Loans receivable	$ 15,518,612	$ 15,246,812
Allowance for credit losses	(186,604)	(182,283)	$ (176,159)	$ (172,665)
Loans receivable, net	15,332,008	15,064,529
Net deferred origination (fees) costs included in loans receivable	(25,349)	(25,882)
Net purchase accounting (discounts) premiums included in loans receivable	(16,811)	(17,832)
Accrued interest receivable on loans	58,053	54,971
Residential real estate
Summary of Loans Receivable
Loans receivable	1,508,403	1,446,008
Allowance for credit losses	(19,974)	(19,683)	(16,227)	(16,458)
Commercial real estate
Summary of Loans Receivable
Loans receivable	9,992,019	9,797,047
Allowance for credit losses	(130,253)	(125,816)	(122,172)	(117,901)
Other commercial
Summary of Loans Receivable
Loans receivable	2,804,104	2,799,668
Allowance for credit losses	(21,164)	(21,454)	(23,882)	(24,703)
Home equity
Summary of Loans Receivable
Loans receivable	829,844	822,232
Allowance for credit losses	(10,570)	(10,759)	(9,173)	(8,566)
Other consumer
Summary of Loans Receivable
Loans receivable	384,242	381,857
Allowance for credit losses	$ (4,643)	$ (4,571)	$ (4,705)	$ (5,037)