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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
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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. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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