RELATED PARTY TRANSACTIONS |
6 Months Ended |
|---|---|
Jun. 30, 2018 | |
| Related Party Transactions [Abstract] | |
| RELATED PARTY TRANSACTIONS | RELATED PARTY TRANSACTIONS Please refer to Note 2 for a discussion of the Merger. Prior to the Merger, we were a party to the Amended and Restated Services Agreement with NuStar GP, LLC, effective March 1, 2016 (the Amended GP Services Agreement), which provided that we furnish administrative services necessary to conduct the business of NuStar GP Holdings, and NuStar GP Holdings compensated us for these services for an annual fee of $1.0 million, subject to adjustment. We terminated the Amended GP Services Agreement in conjunction with the Merger. |