Shareholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2018
Shareholders' Equity [Abstract]  
Summary of company's share option activity

   

Number

of shares upon exercise

  Weighted average exercise price  

Weighted- average remaining contractual term

(in years)

  

Aggregate intrinsic

value (1)

 
              
 Outstanding at beginning of year  2,360,647  $10.76   8.05     
 Granted  3,333   13.40   9.64     
 Exercised  (261,670)  5.69   8.79     
 Forfeited  (99,326)  12.50   7.12     
                  
 Outstanding at end of year  2,002,984  $11.5   7.78  $12,788 
                  
 Exercisable at end of year  944,037  $8.67   6.95  $8,641 

 

(1)Calculation of aggregate intrinsic value for options outstanding and exercisable as of June 30, 2018 is based on the share price of the Company’s ordinary shares as of June 30, 2018 which was $17.8 per share.
Summary of the RSUs activity
   Six months ended 
   June 30,
2018		 
     
 Outstanding at December 31, 2017  88,759 
 Granted  144,801 
 Vested  (825)
 Forfeited  (11,608)
 Outstanding as of June 30,2018  221,127
Schedule of share based compensation expense
   

Six months ended

June 30,

 
   2018  2017 
        
 Cost of products $189  $204 
 Cost of services  152   83 
 Research and development  402   297 
 Selling and marketing  476   430 
 General and administrative  1,161   934 
          
 Total share-based compensation expense $2,380  $1,948