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Long-Term Debt and Capital Lease Obligations - Summary of Long-Term Debt (Parenthetical) (Detail) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Capital lease obligations, imputed interest at 4.75% [Member]
   
Long Term Debt And Equity Financings [Line Items]    
Imputed interest rate for capital lease obligation 4.75% 4.75%
Monthly installment capital lease obligation $ 1,507 $ 1,507
7% Secured Notes Due 2016 [Member]
   
Long Term Debt And Equity Financings [Line Items]    
Interest rate on convertible notes 7.00% 7.00%
Debt instrument, maturity date July 2016  
Debt instrument, net of discount $ 3,748,631 $ 4,656,934