Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,869,887,000	$ 1,862,682,000	$ 1,892,998,000	$ 1,892,611,000
Ending balance	1,752,312,000	1,804,138,000	1,752,312,000	1,804,138,000
Other comprehensive loss reclassifications	0	0	0	0
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(78,335,000)	(79,581,000)	(71,620,000)	(85,373,000)
Other comprehensive income (loss), net of tax	14,866,000		8,151,000
Ending balance	(63,469,000)	$ (86,113,000)	(63,469,000)	$ (86,113,000)
Unrealized Gains on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	815,000		537,000
Other comprehensive income (loss), net of tax	352,000		630,000
Ending balance	1,167,000		1,167,000
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(79,150,000)		(72,157,000)
Other comprehensive income (loss), net of tax	14,514,000		7,521,000
Ending balance	$ (64,636,000)		$ (64,636,000)