Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease cost (gross lease expense)	$ 3,414	$ 3,028	$ 6,878	$ 6,067
Variable lease costs	1,414	1,896	3,017	3,437
Sublease income (including reimbursed expenses)	$ 1,162	$ 1,866	$ 2,579	$ 3,667