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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Dec. 31, 2013
PREPAID EXPENSES AND OTHER CURRENT ASSETS      
Other current assets   $ 253  
Initial public offering costs   233  
Employee advances   33 $ 21
Prepaid expenses   8 33
Prepaid development costs     656
Total prepaid expenses and other current assets $ 866 $ 527 $ 710