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SELECTED BALANCE SHEET COMPONENTS - ACCRUED EXPENSES (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Accounts payable and accrued expenses:    
Bonus related compensation $ 1,615 $ 1,956
Employee related accruals 1,759 1,341
Accrued expenses 24 306
Total $ 3,398 $ 3,603