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Notes Payable and Debt - Summary of Notes Payable to Significant Stockholder (Detail) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Short-term Debt [Line Items]    
Demand notes payable value $ 6,685,000 $ 6,410,000
Accrued interest 1,257,692 919,526
Aggregate carrying value 7,942,692 7,329,526
Unsecured Demand Note Payable; Interest Rate of 7%: Issued December 2009 [Member]
   
Short-term Debt [Line Items]    
Demand notes payable value 350,000 350,000
Unsecured Demand Notes Payable; Interest Rate of 7%: Issued January 2010 - December 2010 [Member]
   
Short-term Debt [Line Items]    
Demand notes payable value 3,310,000 3,310,000
Unsecured Demand Notes Payable; Interest Rate of 7%: Issued January 2011 - December 2011 [Member]
   
Short-term Debt [Line Items]    
Demand notes payable value 2,240,000 2,240,000
Unsecured Demand Notes Payable; Interest Rate of 7%: Issued January 2012 - December 2012 [Member]
   
Short-term Debt [Line Items]    
Demand notes payable value 510,000 510,000
Unsecured Demand Notes Payable; Interest Rate of 7%: Issued January 2013 - September 2013 [Member]
   
Short-term Debt [Line Items]    
Demand notes payable value $ 275,000 $ 0