Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Components of accrued expenses:    
Salaries, bonuses and related benefits $ 756 $ 493
Professional fees 261 215
Research and development expenses 936 653
Accrued milestones 1,500 1,500
Other 56 38
Total accrued expenses $ 3,509 $ 2,899