v3.8.0.1

UNIT-BASED COMPENSATION Table 1 - LTIP Compensation Expense (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 01, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) |  | 902,911 | 793,097 |
Unit-based awards transferred (units) | 730,288 |  |  |
Compensation expense |  | $ 8,727 | $ 8,294 |
Restricted units, domestic employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) |  | 736,746 | 647,340 | 0
Unit-based awards transferred (units) | 586,524 |  |  |
Compensation expense |  | $ 7,881 | $ 5,980 |
Restricted units, non-employee directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) |  | 27,097 | 18,134 | 0
Unit-based awards transferred (units) | 17,629 |  |  |
Compensation expense |  | $ 251 | $ 388 |
Restricted units, international employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) |  | 58,107 | 50,609 | 0
Unit-based awards transferred (units) | 49,121 |  |  |
Compensation expense |  | $ 595 | $ 715 |
Performance Units [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) |  | 38,865 | 35,373 |
Unit-based awards transferred (units) | 77,014 |  |  |
Compensation expense |  | $ 0 | $ 1,211 |
Performance units awarded and outstanding |  | 80,961 | 77,014 |

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