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Income Taxes - Summary of Income Tax Provision from Continuing Operations Resulted in Effective Tax Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	$ 55,114	$ 60,575	$ 43,636
State income taxes, net of federal benefit	10,567	8,430	4,950
Detriment from foreign tax rates	1,175	3,425	3,655
Other expenses not deductible for tax purposes	3,079	4,362	3,543
Adjustment to reserve for uncertain tax positions	(1,231)	2,504	(132)
Impact of 2017 U.S. tax reform — deferred tax	0	(1,088)	(656)
Sale of Ringtail business	0	(2,097)	3,798
Share-based compensation	(6,560)	(4,447)	(1,371)
Release of valuation allowance on foreign tax credits	(7,336)	0	0
Income tax benefit related to the License Agreement, net	(3,899)	0	0
Other adjustments, net	855	60	(242)
Income tax provision	$ 51,764	$ 71,724	$ 57,181

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