Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease costs	$ 15,769	$ 11,332	$ 39,368	$ 33,241
Short-term lease costs	768	926	1,778	2,355
Variable lease costs	3,730	3,030	9,563	8,728
Sublease income	(1,048)	(1,259)	(3,178)	(3,702)
Total lease cost, net	$ 19,219	$ 14,029	$ 47,531	$ 40,622