Investments - Investments in Equity Securities (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 14, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity Securities
Beginning balance		$ 77,800	$ 73,600
New investments		9,400	45,200
Reclassification due to acquisition of investee		500	(7,600)
Reclassification from investments in equity securities to equity method investments			(36,800)
(Decrease) increase in fair value of investments in equity securities		13,100	3,200
Realized gain on investment in equity securities	$ 2,600	0	2,600	$ 0
Foreign currency translation adjustments and other		(3,800)	(2,400)
Ending balance		96,500	77,800	73,600
Investment in Equity Securities Level 1
Equity Securities
Beginning balance		31,300	53,800
New investments		0	0
Reclassification due to acquisition of investee			0
Reclassification from investments in equity securities to equity method investments			0
(Decrease) increase in fair value of investments in equity securities		(11,800)	(19,700)
Realized gain on investment in equity securities			0
Foreign currency translation adjustments and other		(2,300)	(2,800)
Ending balance		17,200	31,300	53,800
Investment in Equity Securities, Level 2
Equity Securities
Beginning balance		6,200	4,100
New investments		0	0
Reclassification due to acquisition of investee			0
Reclassification from investments in equity securities to equity method investments			0
(Decrease) increase in fair value of investments in equity securities		1,600	2,200
Realized gain on investment in equity securities			0
Foreign currency translation adjustments and other		0	(100)
Ending balance		7,800	6,200	4,100
Investments in Equity Securities, All Others
Equity Securities
Beginning balance		40,300	15,700
New investments		9,400	45,200
Reclassification due to acquisition of investee			(7,600)
Reclassification from investments in equity securities to equity method investments			(36,800)
(Decrease) increase in fair value of investments in equity securities		23,300	20,700
Realized gain on investment in equity securities			2,600
Foreign currency translation adjustments and other		(1,500)	500
Ending balance		$ 71,500	$ 40,300	$ 15,700