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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of assets measured at fair value on a recurring basis
    Fair Value Measurement at December 31, 2016 Using:
    Quoted Prices in
Active Markets for 
Identical Assets		   Significant Other 
Observable Inputs		   Significant 
Unobservable 
Inputs
    (Level 1)   (Level 2)   (Level 3)
Corporate debt securities   $ 951     $ -     $ -  
Money market funds (included in cash and cash equivalents)     49,839                  
Total   $ 50,790     $ -     $ -  

 

    Fair Value Measurement at December 31, 2015 Using:
    Quoted Prices in
Active Markets for 
Identical Assets		   Significant Other 
Observable Inputs		   Significant 
Unobservable 
Inputs
    (Level 1)   (Level 2)   (Level 3)
Corporate debt securities   $ 869     $ -     $ -  
Money market funds (included in cash and cash equivalents)     43,027                  
Total   $ 43,896     $ -     $ -  
Schedule of estimated useful lives assets
Building 30 years
Building improvements 5 to 20 years
Furniture and fixtures 5 years
Computer, office & manufacturing equipment 3 years
Purchased software 3 years
Schedules of concentration of credit risk with respect to net accounts receivable
    2016   2015
Customer A     17 %     1 %
Customer B     13 %     7 %
Customer C     13 %     1 %
Customer D     5 %     26 %
Customer E     - %     17 %