Income Taxes - Summary of Income Tax Provision from Continuing Operations Resulted in Effective Tax Rates (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate									$ 60,575	$ 43,636	$ 30,487
State income taxes, net of federal benefit									8,430	4,950	781
Detriment (benefit) from foreign tax rates									3,425	3,655	(8,500)
Valuation allowance on foreign net operating loss carryforward									260	(450)	253
Other expenses not deductible for tax purposes									4,362	3,543	2,466
Adjustment to reserve for uncertain tax positions									2,504	(132)	456
Impact of 2017 U.S. tax reform — deferred tax									0	(706)	(63,525)
Impact of 2017 U.S. tax reform — Transition Tax									(1,088)	50	18,655
Sale of Ringtail business									(2,097)	3,798	0
Equity-based compensation									(4,447)	(1,371)	809
Other adjustments, net									(200)	208	(2,739)
Income tax provision (benefit)	$ 10,624	$ 19,857	$ 21,313	$ 19,930	$ 7,834	$ 19,964	$ 14,113	$ 15,270	$ 71,724	$ 57,181	$ (20,857)