Segment Information - Additional Information (Detail) - Sales Revenue, Net - Customer	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Customer Concentration Risk | UNITED STATES
Segment Reporting Information [Line Items]
Concentration Risk Percentage	61.00%	63.00%	63.00%
Customer Concentration Risk | International
Segment Reporting Information [Line Items]
Concentration Risk Percentage	39.00%	37.00%	37.00%
Geographic Concentration Risk | International
Segment Reporting Information [Line Items]
Number of customers which represented more than 10% of the Company's revenue	0	0	0
Geographic Concentration Risk | International | Minimum
Segment Reporting Information [Line Items]
Concentration Risk Percentage	10.00%	10.00%	10.00%