Segment Information - Additional Information (Detail) - Sales Revenue, Net - Customer |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Customer Concentration Risk | United States | |||
| Segment Reporting Information [Line Items] | |||
| Concentration Risk Percentage | 62.00% | 64.00% | 61.00% |
| Customer Concentration Risk | International | |||
| Segment Reporting Information [Line Items] | |||
| Concentration Risk Percentage | 38.00% | 36.00% | 39.00% |
| 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 |
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- Definition Entity wide revenue, major customer, number. No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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