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Restatements - Additional Information (Detail) (USD $)
9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Jan. 14, 2011
Sep. 30, 2012
10% convertible debentures
Sep. 30, 2009
10% convertible debentures
Jan. 14, 2011
10% convertible debentures
Sep. 30, 2012
10% convertible debentures
After Amendment
Jan. 31, 2011
10% convertible debentures
After Amendment
Jan. 14, 2011
10% convertible debentures
After Amendment
Sep. 30, 2012
10% convertible debentures
After Amendment
Maximum
Jan. 14, 2011
10% convertible debentures
After Amendment
Cash Transactions
Jan. 14, 2011
10% convertible debentures
After Amendment
Non Cash
Jan. 14, 2011
10% convertible debentures
Before Amendment
Jan. 14, 2011
10% convertible debentures
Before Amendment
Non Cash
Convertible debt, interest rate 8.00%       10.00%           15.00% 18.00%   12.00%
Proceeds from convertible debt $ 1,500,000 $ 0     $ 600,000                  
Convertible debt, maturity date             Jun. 30, 2012              
Convertible debt, conversion price for interest payment                 $ 0.60       $ 0.90  
Convertible debt, conversion price                 $ 2.50       $ 2.00  
Warrant term               3 years            
Number of shares of common stock called by warrants, percentage of outstanding principal     5.00%     5.00%                
Warrant exercise price 1.0               0.90          
Percent difference in the present value of cash flows between the original terms and the modified terms                   10.00%        
Loss on debt extinguishment   1,350,000   1,400,000                    
Derivative liability       $ 797,000     $ 797,000