Quarterly report pursuant to Section 13 or 15(d)

Certain Balance Sheet Items - Accrued Liabilities (Detail)

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Certain Balance Sheet Items - Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Statement of Financial Position [Abstract]    
Accrued compensation $ 842 $ 518
Accrued pre-clinical and clinical trial expenses 2,815 418
Accrued professional fees 242 782
Forward contract   453
Other accruals 91 80
Total accrued liabilities $ 3,990 $ 2,251