Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Additional Information (Detail)

v3.3.0.814
Segment Information - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
Sep. 30, 2015
USD ($)
Customer
Sep. 30, 2014
Customer
Dec. 31, 2014
USD ($)
International          
Segment Reporting Information [Line Items]          
Long-lived assets outside of the United States | $ $ 339,000   $ 339,000   $ 374,000
Geographic Concentration Risk | Sales Revenue, Net | UNITED STATES          
Segment Reporting Information [Line Items]          
Concentration Risk Percentage 59.00% 66.00% 59.00% 62.00%  
Geographic Concentration Risk | Sales Revenue, Net | International          
Segment Reporting Information [Line Items]          
Concentration Risk Percentage 41.00% 34.00% 41.00% 38.00%  
Number of customers which represented more than 10% of the Company's revenue     0 0  
Geographic Concentration Risk | Sales Revenue, Net | International | Minimum          
Segment Reporting Information [Line Items]          
Concentration Risk Percentage     10.00% 10.00%