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Summary of Changes in Fair Value of Company's Level 3 Liabilities Measured on Recurring Basis (Detail) (USD $)
6 Months Ended
Jun. 30, 2014
Common stock warrants [Member]
 
Fair Value Disclosure [Line Items]  
Balance beginning $ 0
Extinguishment 0
Fair value at issuance 466,706
Change in fair value (117,743)
Balance ending 348,963
Series A Preferred Stock [Member]
 
Fair Value Disclosure [Line Items]  
Balance beginning 56,926
Extinguishment 0
Fair value at issuance 0
Change in fair value (56,926)
Balance ending 0
Convertible Notes Payable [Member]
 
Fair Value Disclosure [Line Items]  
Balance beginning 534,975
Extinguishment (118,300)
Fair value at issuance 189,300
Change in fair value (220,975)
Balance ending $ 385,000