Income Taxes - Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current, Federal	$ 35,497	$ (14,775)	$ 60,529
Current, State	2,625	1,605	808
Current, Foreign	39,075	38,723	36,700
Current, Total	77,197	25,553	98,037
Deferred (net of valuation allowance), Federal	(10,966)	(13,399)	249
Deferred (net of valuation allowance), State	(1,018)	(370)	(891)
Deferred (net of valuation allowance), Foreign	(2,024)	1,893	2,270
Deferred Income Tax Expense (Benefit)	(14,008)	(11,876)	1,628
Income tax expense	$ 63,189	$ 13,677	$ 99,665