Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Weighted average remaining lease term for operating leases	6 years 4 months 24 days
Weighted average discount rate for operating leases	4.80%
Components of Lease Expense [Abstract]
Operating lease cost	$ 13,136	$ 12,861
Variable lease cost	974	1,052
Short-term lease cost	45	52
Sublease income	(1,131)	(1,593)
Total lease expense	13,024	12,372
Supplemental Cash Flow Information Related to Leases [Abstract]
Operating cash outflow from operating leases	13,367	14,377
Right-of-use assets obtained in exchange for lease liabilities	21,822	$ 128,704
Maturities of Operating Lease Liabilities [Abstract]
2020	37,395
2021	43,231
2022	28,941
2023	20,119
2024	15,597
Thereafter	30,881
Total	176,164
Less: Imputed interest	27,563
Total lease liability	148,601
Additional lease liabilities not yet commenced	$ 100
Minimum [Member]
Leases [Abstract]
Remaining lease terms	1 year
Maximum [Member]
Leases [Abstract]
Remaining lease terms	24 years
Extension period for leases	20 years
Termination period for leases	1 year