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Accrued Liabilities
 12 Months Ended
Dec. 31, 2011
Accrued Liabilities [Abstract]  
Accrued Liabilities
10. ACCRUED LIABILITIES

We had accrued liabilities of $8,225,015 as of December 31, 2011 which included accrued research and development expenses of $5,913,908 and accrued compensation and benefits of $895,203.