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Significant Stock-Based Plan Activity and Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2015
Significant Stock-Based Plan Activity and Stock-Based Compensation [Abstract]  
Stock-based compensation expense
Stock-based compensation expense was recognized in our Consolidated Statements of Operations as follows (in thousands):

  
Three Months Ended
March 31,
 
  
2015
  
2014
 
Selling, general and administrative expense
 
$
251
  
$
154
 
Cost of sales
  
29
   
17
 
Total Stock-based compensation expense
 
$
280
  
$
171