PARTNERS' EQUITY Table 4 - Cash Distributions Paid - General and Common Limited Partners (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Distribution Made to General and Common Limited Partners [Line Items] | ||||||
| Cash distributions applicable to common limited partners and general partner (distribution earned) | $ 64,205 | $ 57,057 | $ 115,267 | $ 115,083 | $ 121,262 | $ 232,251 |
| Common Limited Partner [Member] | ||||||
| Distribution Made to General and Common Limited Partners [Line Items] | ||||||
| Cash distributions per unit applicable to common limited partners | $ 0.60 | $ 0.60 | $ 1.095 | $ 1.095 | $ 1.20 | $ 2.190 |
| Distribution date of record (distribution earned) | Aug. 07, 2018 | May 08, 2018 | Feb. 08, 2018 | |||
| Distribution payment date (distribution earned) | Aug. 13, 2018 | May 14, 2018 | Feb. 13, 2018 | |||