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Goodwill and Valuation Impairment - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Other Intangible Assets [Line Items]    
Goodwill recognized $ 58,337,290  
Impairment of goodwill 26,850,039 17,636,569
Gain on equity interest in Quest Resource Management Group, LLC 667,316 1,964,540
Earth911 Inc [Member]
   
Goodwill And Other Intangible Assets [Line Items]    
Goodwill recognized   17,636,569
Impairment of goodwill 26,850,039  
Gain on equity interest in Quest Resource Management Group, LLC 23,449,372  
impact of the goodwill impairment and gain on investment $ 3,400,667