Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,967,732,000	$ 1,211,018,000
Other comprehensive loss before reclassification	(6,265,000)
Consensus separation adjustment	141,000
Net current period other comprehensive loss	(2,209,000)	(8,424,000)
Ending balance	1,865,494,000	(1,274,911,000)
Other comprehensive loss reclassifications	0
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(57,222,000)	(54,806,000)
Consensus separation adjustment	4,056,000
Ending balance	(59,431,000)	$ (63,230,000)
Unrealized Gains (Losses) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	169,000
Other comprehensive loss before reclassification	0
Consensus separation adjustment	0
Net current period other comprehensive loss	0
Ending balance	169,000
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(57,391,000)
Other comprehensive loss before reclassification	(6,265,000)
Consensus separation adjustment	4,056,000
Net current period other comprehensive loss	(2,209,000)
Ending balance	$ (59,600,000)