v3.19.3.a.u2

UNIT-BASED COMPENSATION Table 1 - Information for LTIP Plans (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) | 1,456,296 | 1,277,480 | 902,911 |
Compensation expense | $ 37,940 | $ 30,699 | $ 8,727 |
Restricted units, domestic employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) | 1,223,143 | 1,028,484 | 736,746 | 647,340
Compensation expense | $ 9,437 | $ 8,233 | $ 7,881 |
Restricted units, non-employee directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) | 61,349 | 59,752 | 27,097 |
Compensation expense | $ 774 | $ 524 | $ 251 |
Restricted units, international employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) | 10,243 | 30,918 | 58,107 |
Compensation expense | $ 711 | $ 1,158 | $ 595 |
Performance Units [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unit-based awards, outstanding (units) | 74,439 | 80,690 | 38,865 | 35,373
Compensation expense | $ 4,172 | $ 1,889 | $ 0 |
Performance units awarded and outstanding | 161,561 | 158,326 | 80,961 | 77,014
Share-based Payment Arrangement [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation expense | $ 22,846 | $ 18,895 | $ 0 |
Performance units awarded and outstanding | 0 | 0 | 0 |

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