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Accrued Compensation and related expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Compensation Related Costs [Abstract]    
Accrued payroll and related taxes $ 250 $ 453
Accrued vacation 148 193
Accrued commissions and bonuses 2,347 1,569
Total accrued compensation and related expense $ 2,745 $ 2,215