FAIR VALUE MEASUREMENTS (Measured on Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified												3 Months Ended
	Sep. 30, 2013 Catalyst lease obligations [Member] Level 1 [Member]	Dec. 31, 2012 Catalyst lease obligations [Member] Level 1 [Member]	Sep. 30, 2013 Catalyst lease obligations [Member] Level 2 [Member]	Dec. 31, 2012 Catalyst lease obligations [Member] Level 2 [Member]	Sep. 30, 2013 Catalyst lease obligations [Member] Level 3 [Member]	Dec. 31, 2012 Catalyst lease obligations [Member] Level 3 [Member]	Sep. 30, 2013 Catalyst lease obligations [Member] Total [Member]	Dec. 31, 2012 Catalyst lease obligations [Member] Total [Member]	Dec. 31, 2012 Contingent consideration for refinery acquisition [Member] Level 1 [Member]	Dec. 31, 2012 Contingent consideration for refinery acquisition [Member] Level 2 [Member]	Dec. 31, 2012 Contingent consideration for refinery acquisition [Member] Level 3 [Member]	Sep. 30, 2013 Contingent consideration for refinery acquisition [Member] Level 3 [Member] Discounted Cash Flow [Member]	Dec. 31, 2012 Contingent consideration for refinery acquisition [Member] Total [Member]	Sep. 30, 2013 Commodity contract [Member] Level 1 [Member]	Dec. 31, 2012 Commodity contract [Member] Level 1 [Member]	Dec. 31, 2012 Commodity contract [Member] Level 2 [Member]	Dec. 31, 2012 Commodity contract [Member] Level 3 [Member]	Dec. 31, 2012 Commodity contract [Member] Total [Member]	Sep. 30, 2013 Inventory Intermediation Agreement Obligation [Member] Level 1 [Member]	Sep. 30, 2013 Inventory Intermediation Agreement Obligation [Member] Level 2 [Member]	Sep. 30, 2013 Inventory Intermediation Agreement Obligation [Member] Level 3 [Member]	Sep. 30, 2013 Inventory Intermediation Agreement Obligation [Member] Total [Member]	Sep. 30, 2013 Inventory Supply Arrangement Obligation [Member] Level 1 [Member]	Dec. 31, 2012 Inventory Supply Arrangement Obligation [Member] Level 1 [Member]	Sep. 30, 2013 Inventory Supply Arrangement Obligation [Member] Level 2 [Member]	Dec. 31, 2012 Inventory Supply Arrangement Obligation [Member] Level 2 [Member]	Sep. 30, 2013 Inventory Supply Arrangement Obligation [Member] Level 3 [Member]	Dec. 31, 2012 Inventory Supply Arrangement Obligation [Member] Level 3 [Member]	Sep. 30, 2013 Inventory Supply and Offtake Arrangements [Member] Total [Member]	Dec. 31, 2012 Inventory Supply and Offtake Arrangements [Member] Total [Member]	Sep. 30, 2013 Money market funds [Member] Level 1 [Member]	Dec. 31, 2012 Money market funds [Member] Level 1 [Member]	Sep. 30, 2013 Money market funds [Member] Level 2 [Member]	Dec. 31, 2012 Money market funds [Member] Level 2 [Member]	Sep. 30, 2013 Money market funds [Member] Level 3 [Member]	Dec. 31, 2012 Money market funds [Member] Level 3 [Member]	Sep. 30, 2013 Money market funds [Member] Total [Member]	Dec. 31, 2012 Money market funds [Member] Total [Member]	Dec. 31, 2012 Commodity contract [Member] Level 1 [Member]	Sep. 30, 2013 Commodity contract [Member] Level 2 [Member]	Dec. 31, 2012 Commodity contract [Member] Level 2 [Member]	Sep. 30, 2013 Commodity contract [Member] Level 3 [Member]	Dec. 31, 2012 Commodity contract [Member] Level 3 [Member]	Sep. 30, 2013 Commodity contract [Member] Total [Member]	Dec. 31, 2012 Commodity contract [Member] Total [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets														$ 8,319									$ 0	$ 0	$ 29,563	$ 5,595	$ 0	$ 0			$ 5,856	$ 175,786	$ 0	$ 0	$ 0	$ 0	$ 5,856	$ 175,786	$ 3,303	$ 0	$ 0	$ 0	$ 0	$ 8,319	$ 3,303
Liabilities	$ 0	$ 0	$ 40,323	$ 43,442	$ 0	$ 0	$ 40,323	$ 43,442	$ 0	$ 0	$ 21,358		$ 21,358	$ 0	$ 0	$ 1,872	$ 0	$ 1,872	$ 0	$ 1,291	$ 0	$ 1,291							$ 29,563	$ 5,595										$ 14,587		$ 0		$ 14,587
Valuation method used to measure financial instruments [Abstract]
Risk free interest rate												0.16%
Credit rate spread												4.38%
Discount rate												4.54%