Income Taxes - Components of Provision for Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax expense:
U.S. federal	$ 1,727	$ 214	$ 7,153
International	50,731	45,185	38,493
State and local	9,424	14,215	14,443
Total current income tax expense	61,882	59,614	60,089
Deferred income tax expense (benefit):
U.S. federal	(317)	2,533	(3,306)
International	1,765	(7,538)	(2,219)
Total deferred income tax expense (benefit)	1,448	(5,005)	(5,525)
Total income tax expense	$ 63,330	$ 54,609	$ 54,564