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Accrued Compensation and related expenses (Tables)
 6 Months Ended
Jun. 30, 2017
Compensation Related Costs [Abstract]  
Schedule of accrued compensation and related expenses
    June 30,
2017		     December 31,
2016		  
      (unaudited)          
Accrued payroll and related taxes   $ 49     $ 262  
Accrued vacation     49       66  
Accrued commissions and bonuses     2,515       3,701  
Total accrued compensation and related expense   $ 2,613     $ 4,029