SEGMENT AND GEOGRAPHIC DATA - Long-lived Assets by Geographic Region (Detail) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total Long-Lived Assets	[1]	$ 107,288	$ 117,191
Reportable Geographical Components | United States
Segment Reporting Information [Line Items]
Total Long-Lived Assets	[1]	83,344	89,343
Reportable Geographical Components | International
Segment Reporting Information [Line Items]
Total Long-Lived Assets	[1]	$ 23,944	$ 27,848

[1] Total long-lived assets include property and equipment, net.