This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer.

+ References+ Details

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

BUSINESS COMBINATIONS (Evergreen Oil, Inc) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 13, 2013 Evergreen Oil, Inc. [Member] operation	Sep. 30, 2013 Oil Re-Refining and Recycling [Member]	Dec. 31, 2012 Oil Re-Refining and Recycling [Member]	Sep. 13, 2013 Oil Re-Refining and Recycling [Member] Evergreen Oil, Inc. [Member]	Sep. 30, 2013 S K Environmental Services [Member]	Dec. 31, 2012 S K Environmental Services [Member]	Sep. 13, 2013 S K Environmental Services [Member] Evergreen Oil, Inc. [Member]
Business Acquisition [Line Items]
Outstanding common shares acquired (as a percent)			100.00%
Purchase price			$ 57,000,000
All-cash portion of purchase price			60,500,000
Net working capital adjustment included in purchase price			3,500,000
Threshold for working capital adjustment			1,000,000
Goodwill	$ 590,152,000	$ 593,771,000		$ 215,816,000	$ 215,704,000	$ 2,800,000	$ 146,956,000	$ 148,422,000	$ 400,000
Number of oil re-refining operations owned by the acquiree			1