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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
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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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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Period Type: | duration