DEFERRED CHARGES AND OTHER ASSETS, NET (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred turnaround costs, net	$ 232,501	$ 177,236
Catalyst, net	90,444	77,725
Linefill	13,504	13,504
Restricted cash	1,500	1,500
Intangible assets, net	199	219
Other	32,281	20,529
Total deferred charges and other assets, net	$ 370,429	$ 290,713