v3.3.1.900

SEGMENT INFORMATION Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from largest customer | $ 464,919 | $ 493,566 | $ 570,611 | $ 554,944 | $ 681,738 | $ 794,422 | $ 749,745 | $ 849,213 | $ 2,084,040 | $ 3,075,118 | $ 3,463,732
Sales Revenue, Net [Member] | Valero Energy Corporation [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Largest customer percentage of revenue |  |  |  |  |  |  |  |  | 16.00% | 9.00% | 15.00%
Revenue from largest customer |  |  |  |  |  |  |  |  | $ 331,700 | $ 282,900 | $ 534,200

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