Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost (gross lease expense)	$ 13,377	$ 12,773
Variable lease costs	5,636	6,630
Sublease income (including reimbursed expenses)	$ 5,303	$ 7,527