DEFERRED CHARGES AND OTHER ASSETS, NET (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred turnaround costs, net	$ 188,111	$ 204,987
Catalyst	73,494	77,322
Deferred financing costs, net	26,837	30,128
Linefill	10,230	10,230
Restricted cash	1,500	1,521
Intangible assets, net	241	357
Other	5,877	5,972
Deferred charges and other assets	$ 306,290	$ 330,517