NET INCOME (LOSS) PER COMMON UNIT Table - Net Income (Loss) per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Earnings Per Share [Abstract] | ||||
| Net income (loss) | $ 29,766 | $ 45,951 | $ (117,875) | $ (231,912) |
| Distributions to preferred limited partners | (30,684) | (30,423) | (61,107) | (60,846) |
| Distributions to common limited partners | (43,678) | (64,658) | (87,408) | (129,348) |
| Distribution equivalent rights to restricted units | (502) | (642) | (1,008) | (1,285) |
| Distributions in excess of income (loss) | (45,098) | (49,772) | (267,398) | (423,391) |
| Distributions to common limited partners | 43,678 | 64,658 | 87,408 | 129,348 |
| Allocation of distributions in excess of income (loss) | (45,098) | (49,772) | (267,398) | (423,391) |
| Series D Preferred Unit accretion | (5,064) | (4,446) | (9,966) | (8,748) |
| Net (loss) income attributable to common units | $ (6,484) | $ 10,440 | $ (189,956) | $ (302,791) |
| Basic weighted-average common units outstanding | 109,194,722 | 107,763,016 | 109,046,061 | 107,647,957 |
| Basic net income (loss) per common unit | $ (0.06) | $ 0.10 | $ (1.74) | $ (2.81) |