Segments and Geographical Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Long-lived assets	[1]	$ 136,473	$ 90,125
United States
Segment Reporting Information [Line Items]
Long-lived assets	[1]	112,632	76,511
Mexico
Segment Reporting Information [Line Items]
Long-lived assets	[1]	15,422	6,229
Other international
Segment Reporting Information [Line Items]
Long-lived assets	[1]	$ 8,419	$ 7,385

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