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Share-based Compensation (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock Option Activity

A summary of the stock option activity under the Company’s plans for the six months ended June 30, 2017 is as follows:

 

    Number of shares     Weighted average
exercise price		  
             
Options outstanding at beginning of year     850,232     $ 8.06  
Granted     105,000       9.90  
Less:                
Exercised     (107,042 )     6.16  
Forfeited prior to vesting     (1,583 )     8.63  
Canceled or expired     (5,436 )     10.54  
Options outstanding at June 30, 2017     841,171       8.52  
Options exercisable at end of June 30, 2017     533,598     $ 7.17  
Schedule of Share-based Compensation Expense

Share-based compensation expense has been recorded as follows:

 

    Three months ended June 30,     Six months ended June 30,  
    2017     2016     2017     2016  
Cost of goods sold   $ 7     $ 7     $ 14     $ 11  
Sales and marketing     15       13       29       27  
Research and product development     37       39       76       66  
General and administrative     110       112       221       215  
    $ 169     $ 171     $ 340     $ 319