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Stockholders' Equity (Detail) - Schedule of warrant activity (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Dec. 31, 2011
Number of Warrants [Member]
      
Number of warrants 899,480    
Exercisable at September 30, 2012 983,280    
Granted 155,100 899,480  
Exercised 71,300 0  
Forfeited 0 0  
Expired 0 0  
Number of warrants 983,280 899,480 899,480
Average exercise price [Member]
      
Average exercise price (in Dollars per share) $ 2.39 $ 2.00 $ 2.00
Exercisable at September 30, 2012 (in Dollars per share) $ 2.39    
Granted (in Dollars per share) $ 4.50 $ 2.00  
Exercised (in Dollars per share) $ 2.00 $ 0  
Average exercise price (in Dollars per share) $ 2.39 $ 2.00 $ 2.00
Weighted Average Remaining Contractual Term [Member]
      
Weighted average remaining contractual term in years 1 year 343 days 2 years 229 days 2 years 229 days
Exercisable at September 30, 2012 1 year 343 days 2 years 229 days 2 years 229 days
Granted 3 years 2 years 321 days  
Weighted average remaining contractual term in years 1 year 343 days 2 years 229 days 2 years 229 days