Segments and Geographical Information - Net Revenues by Geographic Area (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Operating Income (Loss)		$ 353,611	$ 248,921	$ 188,634
Interest and other income (expense), net		11,188	(6,355)	(2,533)
Net income before provision for income taxes and equity in losses of investee		364,799	242,566	186,101
Net revenues	[1]	1,473,413	1,079,874	845,486
United States
Segment Reporting Information [Line Items]
Net revenues	[1]	836,200	692,254	585,874
the Netherlands
Segment Reporting Information [Line Items]
Net revenues	[1]	456,108	286,911	167,128
Other international
Segment Reporting Information [Line Items]
Net revenues	[1]	181,105	100,709	92,484
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating Income (Loss)		(260,650)	(200,394)	(170,142)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)		$ 614,261	$ 449,315	$ 358,776

[1] Long-lived assets are attributed to countries based on entity that owns the assets.