Leases - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Lessee, Lease, Description
Remaining lease terms	12 years		12 years
Operating lease costs	$ 12,600	$ 12,100	$ 37,600	$ 34,700
Operating lease payments			36,400	32,900
Short-term lease expense	200	700	700	2,000
Sublease income	$ 400	800	$ 200	600
Weighted average discount rate (in percentage)	7.21%		7.21%		7.21%
Weighted average lease term	8 years 4 months 24 days		8 years 4 months 24 days		8 years 9 months 18 days
Right-of-use assets	$ 191,705		$ 191,705		$ 201,661
Right-of-use liabilities	28,645		28,645		27,184
Right-of-use liabilities, non-current	216,993		216,993		$ 227,942
Rent expense, under 842	$ 12,300	$ 13,000	$ 37,300	$ 36,700
Minimum
Lessee, Lease, Description
Remaining lease terms	1 year		1 year
Options to extend leases	5 years		5 years
Maximum
Lessee, Lease, Description
Options to extend leases	10 years		10 years