Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost (gross lease expense)	$ 3,391	$ 3,463
Variable lease costs	1,046	1,603
Sublease income (including reimbursed expenses)	$ 1,256	$ 1,417