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Summary of Changes in Fair Value of Level Three Financial Liabilities (Detail) (Derivative Liabilities, USD $)
9 Months Ended
Sep. 30, 2014
Derivative Liabilities
 
Derivative [Line Items]  
Balance at December 31, 2013 $ 318,000
Change in fair market value of Conversion Feature 1,568,000
Issuance of equity instruments with debt greater than debt carrying amount 2,043,000
Balance at September 30, 2014 $ 3,929,000