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Share-based Compensation Stock Option Rollforward (Tables)
3 Months Ended
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Share-based compensation expense has been recorded as follows:
 
Three months ended March 31,
 
2016
 
2015
Cost of goods sold
$
4

 
$
5

Sales and marketing
14

 
40

Research and product development
27

 
33

General and administrative
103

 
160

 
$
148

 
$
238

A summary of the stock option activity under the Company’s plans for the three months ended March 31, 2016 is as follows:
 
Number of shares
 
Weighted average exercise price
Options outstanding at beginning of quarter
1,028,935
 
$6.03
     Granted
157,200
 
11.97
Less:
 
 
 
     Exercised
(69,621)
 
4.21
     Repurchased
(225,542)
 
4.37
     Canceled or Expired
(980)
 
8.51
Options outstanding at end of quarter
889,992
 
7.64
Options exercisable at end of quarter
550,097
 
$5.64