Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost (gross lease expense)	$ 3,463	$ 3,039
Variable lease costs	1,603	1,541
Sublease income (including reimbursed expenses)	$ 1,417	$ 1,801