Leases - Additional information regarding leases (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease costs		$ 31,691	$ 31,826	$ 30,500
Cash payments included in the measurement of lease liabilities reported in operating cash flows		32,094	30,365
Right-of-use assets obtained in exchange for new lease liabilities		22,686	$ 12,060
Operating lease liability		$ 126,711
Weighted average discount rate		3.90%	3.90%
Weighted average remaining lease term		5 years 10 months 24 days	5 years 9 months 18 days
Balance sheet location of right of use asset		Other assets
Balance sheet location of operating lease liability		Other liabilities
Other assets
Lessee, Lease, Description [Line Items]
Right-of-use assets	[1]	$ 106,836	$ 115,911
Other liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability	[1]	$ 126,711	$ 136,015
Maximum
Lessee, Lease, Description [Line Items]
Operating lease term		11 years

[1] The right-of-use assets are included in ‘other assets’ while the operating lease liability is included in ‘other liabilities.’