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Stockholders' Equity - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Oct. 28, 2013
Mar. 29, 2013
Oct. 31, 2012
Schedule Of Stockholders Equity [Line Items]          
Preferred stock, shares authorized 10,000,000 10,000,000      
Preferred stock, par vale $ 0.001 $ 0.001      
Preferred stock, shares issued 0 0      
Preferred stock, shares outstanding 0 0      
Common stock, shares authorized 200,000,000 100,000,000 200,000,000    
Common stock, par value $ 0.001 $ 0.001   $ 3.00  
Common stock, shares issued 95,814,565 58,040,230      
Common stock, shares outstanding 95,814,565 58,040,230      
Common stock issued for services, Shares 69,017        
Common stock issued for services, Value $ 198,858 $ 249,025      
Exercise price of warrants $ 0.37 $ 0.37   $ 0.37  
Outstanding exercisable warrants 0        
Outstanding contingent warrants    1,381,113      
Number of shares available for grant         7,500,000
weighted-average grant-date fair value of options granted $ 1.69 $ 2.10      
Options outstanding, intrinsic value 72,125 2,331,698      
Options exercisable, intrinsic value 22,500 1,199,613      
Stock based compensation expense 2,194,390 1,661,673      
Unvested share-based awards $ 2,435,000        
unearned stock-based compensation recognized 2 years 2 months 12 days        
Warrant [Member]
         
Schedule Of Stockholders Equity [Line Items]          
Common stock, shares issued   6,905,576   500,000