Segment Reporting - Total Income and Long-lived Assets by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total income by geography	$ 10,132	$ 158,487	$ 155,880	$ 319,993
Long-lived assets by geography	903,311		903,311		$ 1,597,558
United States
Segment Reporting Information [Line Items]
Total income by geography	6,779	146,214	131,732	295,039
Long-lived assets by geography	621,285		621,285		1,282,189
Europe
Segment Reporting Information [Line Items]
Total income by geography	3,353	12,273	24,148	24,919
Long-lived assets by geography	282,026		282,026		$ 315,369
Other
Segment Reporting Information [Line Items]
Total income by geography	$ 0	$ 0	$ 0	$ 35