Investments - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Schedule of Investments [Line Items]
Allowance for credit losses on available-for-sale investments	$ 0		$ 0		$ 0
Impairment loss on investments	0	$ 0	0	$ 0
Investments	(902,149,000)		(902,149,000)		(1,078,257,000)
Gain (loss) on investments	(800,000)	$ (2,300,000)	(6,300,000)	$ (4,400,000)
Long-term Investments
Schedule of Investments [Line Items]
Investments	$ (1,882,000)		$ (1,882,000)		$ (8,218,000)
ORIC
Schedule of Investments [Line Items]
Stock held in investment (shares)	588,235		588,235		588,235