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Investment in Quest Resource Management Group, LLC - Summary of Financial Condition and Operating Results of Quest Recycling Services (Parenthetical) (Detail) (Quest Resource Management Group, LLC [Member])	Dec. 31, 2013
50% ownership interest [Member]
Ownership Interests [Line Items]
Ownership interest percentage	50.00%
100% ownership interest [Member]
Ownership Interests [Line Items]
Ownership interest percentage	100.00%

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- Definition

Ownership Interest Percentage

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Details

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