GEOGRAPHIC AND SEGMENT INFORMATION - NARRATIVE (Details) - segment |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Concentration Risk [Line Items] | |||
| Number of reportable segments | 1 | ||
| Number of operating segments | 3 | ||
| Net Revenue | |||
| Concentration Risk [Line Items] | |||
| Concentration receivable risk (as a percent) | 54.40% | 58.30% | 61.00% |
| Customer concentration risk | Net Revenue | International customers | |||
| Concentration Risk [Line Items] | |||
| Concentration receivable risk (as a percent) | 12.50% | 16.90% | 15.80% |