Concentration of Risk, Segment and Geographic Information - Additional Information 1 (Details) - Customer Concentration Risk [Member] - Partner |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Revenues [Member] | |||
| Concentration Risk [Line Items] | |||
| Number of major partners | 1 | 3 | 1 |
| Revenues [Member] | Partner 1 [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage (in hundredths) | 95.00% | 27.00% | 67.00% |
| Revenues [Member] | Partner 2 [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage (in hundredths) | 22.00% | ||
| Revenues [Member] | Partner 3 [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage (in hundredths) | 19.00% | ||
| Accounts Receivable [Member] | |||
| Concentration Risk [Line Items] | |||
| Number of major partners | 1 | 1 | |
| Accounts Receivable [Member] | Partner 1 [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage (in hundredths) | 100.00% | 85.00% | |
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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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- 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 Number of external partners that accounts for 10 percent or more of an entity's revenues during the period. No definition available.
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