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Common Stock (Details Textual) (USD $)
 1 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2011
Jul. 31, 2011
Jan. 31, 2011
Nov. 30, 2009
Nov. 30, 2008
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
License Agreement with Neurospheres Ltd [Member]
Dec. 31, 2012
Common Stock [Member]
Dec. 31, 2011
Common Stock [Member]
Dec. 31, 2010
Common Stock [Member]
Jun. 30, 2010
Institutional Investors [Member]
Dec. 31, 2012
Series A Warrants [Member]
Jun. 30, 2012
Series A Warrants [Member]
Dec. 31, 2012
Series A Warrants [Member]
Dec. 31, 2011
Series A Warrants [Member]
May 02, 2012
Series B Warrant [Member]
Nov. 30, 2009
Series B Warrant [Member]
Nov. 30, 2008
Series B Warrant [Member]
Dec. 31, 2012
Series B Warrant [Member]
Jun. 30, 2012
Series B Warrant [Member]
Dec. 31, 2012
Series B Warrant [Member]
Dec. 31, 2011
Series B Warrant [Member]
Common Stock (Textual) [Abstract]                                                  
Common stock, shares authorized 75,000,000           75,000,000 75,000,000                                  
Common stock issued in public offering             2,700,000     6,500       700,000       8,000,000              
Series B Warrants issued in public offering                           0                     8,000,000
Warrant exercise price                                                 1.25
Warrant expiration date                                     May 02, 2012            
Units and Warrants share price $ 1.25             $ 1.25           $ 8.65                      
Number of warrants issued                                 2,198,571           2,700,000 2,700,000  
Gross proceeds           $ 3,375,000 $ 6,256,438               $ 3,078,000   $ 3,078,000     $ 12,500,000 $ 20,000,000     $ 3,375,000 $ 10,000,000
Number of shares of common stock                     2,198,571         2,700,000 2,700,000     0.40 0.75 2,198,571   2,700,000  
Warrants issued                               2,700,000 2,198,571                
Exercise price of warrant       15.00 23.00   1.40                                    
Common stock reverse split description   1-for-10                                              
Number of options, Exercised             (3,629) (1,692) (3,451)   (3,629) (1,692) (3,451)                        
Additional share purchased by institutional investor                           500,000                      
Placement Agency Fees             59,090 403,625 483,406                                
Cash payment made for technology licenses                   50,000                              
Payments Annual Creditable Against Certain Royalties                   50,000                              
Litigation cost incurred                   50,000                              
Royalty payments paid                   600,000                              
Class of warrant date until which warrants exercisable description                                 Will expire on the fifth anniversary of the closing date of the initial financing transaction in December 2011.                
Gross proceeds from common stock     9,400,000       19,747,550 19,774,820 7,279,234         5,700,000                      
Common stock issued for payment of technology and licenses 22,427,955           37,506,305 22,427,955                                  
Unissued warrant at the period end                                           5,300,000   5,300,000  
Common Stock (Additional Textual) [Abstract]                                                  
Common stock, sold     1,000,000       9,647,471 525,116 147,520                                
Sale of stock, price per share     $ 10.00       $ 2.12 $ 2.47 $ 11.60                                
Sales agent is paid compensation equal to 3% of gross proceeds             3.00% 3.00% 3.00%                                
Proceeds from common stock and warrant               $ 10,000,000                                  
Outstanding shares of common stock 22,427,955           37,506,305 22,427,955                                  
Stock options granted to investors     6,000,000          3,750 257,850                                
Institutional investor additional shares purchase period description             12 weeks after initial sale                                    
Institutional investor purchase agreement termination date             Sep. 20, 2010                                    
Grant date value     $ 10.00                                            
Stock options given to investor expiry date     Feb. 18, 2011                                            
Warrant right and unit combination description Each Unit consists of one share of our common stock and one Series A warrant. Each Series A warrant gives the holder the right to purchase one share of our common stock at an initial exercise price of $1.40 per share.