Leases - Other Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 01, 2020
Weighted-average remaining lease term (years)
Operating leases	7 years 10 months 28 days	8 years 9 months 21 days
Finance leases	2 years 3 months 3 days	3 years
Weighted-average discount rate
Operating leases	7.90%	8.90%
Finance leases	6.20%	6.10%
Operating cash flows for operating leases	$ 50,869	$ 55,485
Operating cash flows for finance leases	36	48
Financing cash flows for finance leases	235	471
Acquisition of operating leases through adoption of ASC Topic 842	0	389,403
Lease modification	$ 7,051	$ (48,877)	$ 7,051