Restructuring - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 44	$ 26,442	$ 3,269	$ 29,635
Lease restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	44	24,061	594	24,061
Right of use assets write down
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0	13,938	0	13,938
Abandonment of property and equipment
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0	5,147	0	5,147
Other lease restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	44	4,976	594	4,976
Severance and other compensation associated costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0	$ 2,381	$ 2,675	$ 5,574