SIGNIFICANT ACCOUNTING POLICIES - Basis of Presentation (Details) - USD ($) $ in Thousands |
2 Months Ended | 12 Months Ended | |
|---|---|---|---|
Feb. 27, 2015 |
Feb. 27, 2015 |
Dec. 31, 2015 |
|
| Noncash or Part Noncash Acquisitions [Line Items] | |||
| Consideration paid in excess of net book value in connection with the ETG Contribution | $ 6,809 | ||
| Legacy System contributed by Azure | |||
| Noncash or Part Noncash Acquisitions [Line Items] | |||
| IDR units issued as payment (in shares) | 90 | ||
| Aggregate consideration transferred | $ 162,500 | ||
| Increase in partners' capital, excess of the historical carrying value over the consideration paid | $ 51,700 | $ 51,700 |