|
Warrant Liabilities (Details Textual) (USD $)
|
9 Months Ended | 3 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Apr. 09, 2012
|
Mar. 15, 2011
|
Sep. 30, 2010
|
Dec. 31, 2009
|
Apr. 09, 2012
Series A Warrants [Member]
|
Sep. 30, 2012
Series B Warrants [Member]
|
Apr. 09, 2012
Series B Warrants [Member]
|
Apr. 09, 2012
Deerfield Warrant [Member]
|
|
| Warrant Liability (Textual) [Abstract] | |||||||||
| Six-year warrants to purchase shares of common stock | 6,517,648 | ||||||||
| Six month warrants to purchase shares of common stock | 6,517,648 | ||||||||
| Exercise price of warrant per share | 1.57 | 0.87 | 2.13 | 1.15 | 0.85 | 1.25 | |||
| Warrants to purchase shares of common stock | 1,133,824 | ||||||||
| Stock exercised price | $ 0.85 | ||||||||
| Warrant Liability (Additional Textual) [Abstract] | |||||||||
| Deerfield six-year warrants to Purchase common stock shares | 6,000,000 | ||||||||
| Exercise price of common stock shares | $ 1.57 | ||||||||
| Exercisable and expiration date of warrant | Mar. 15, 2017 | ||||||||
| Purchase and sale of shares of common stock under subscription agreements | 6,517,648 | ||||||||