Revenues and Business Information - Schedule of Geographical Distribution of Revenues and Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 360,907	$ 159,938	$ 624,773	$ 313,644
Total assets	1,108,014		1,108,014		$ 1,196,444
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	308,271	138,382	514,523	267,567
Total assets	947,791		947,791		1,012,831
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	29,266	15,124	72,982	31,380
Total assets	68,040		68,040		78,470
Rest of World
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	23,370	$ 6,432	37,268	$ 14,697
Total assets	$ 92,183		$ 92,183		$ 105,143