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Intangible Assets - Summary Amortization Expense Related to Net Intangible Asset (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]    
2014 $ 4,443,000  
2015 3,548,000  
2016 2,308,000  
2017 1,317,000  
2018 1,045,000  
Thereafter 3,026,000  
Total $ 15,687,117 $ 16,332,596