DEFERRED CHARGES AND OTHER ASSETS, NET (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred turnaround costs, net	$ 237,398	$ 177,236
Catalyst, net	89,995	77,725
Linefill	13,504	13,504
Restricted cash	1,500	1,500
Intangible assets, net	209	219
Other	24,103	20,529
Total deferred charges and other assets, net	$ 366,709	$ 290,713