DEFERRED CHARGES AND OTHER ASSETS, NET (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred turnaround costs, net	$ 71,785	$ 78,128
Catalyst	63,957	66,377
Deferred financing costs, net	29,318	30,987
Restricted cash	12,116	12,114
Linefill	8,735	8,042
Intangible assets, net	869	1,085
Other	457	616
Deferred charges and other assets	$ 187,237	$ 197,349