Segment Information - Additional Information (Detail) - Sales Revenue, Net - Customer |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Customer Concentration Risk | UNITED STATES | |||
| Segment Reporting Information [Line Items] | |||
| Concentration Risk Percentage | 64.00% | 61.00% | 63.00% |
| Customer Concentration Risk | International | |||
| Segment Reporting Information [Line Items] | |||
| Concentration Risk Percentage | 36.00% | 39.00% | 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% |