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ACCRUED AND OTHER CURRENT LIABILITIES (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Accrued and Other Current Liabilities    
Accrued research and development $ 4,082 $ 3,435
Accrued legal and professional fees 243 265
Other current liabilities 165 731
Total $ 4,490 $ 4,431