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Significant Stock-Based Plan Activity and Stock-Based Compensation
9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Significant Stock-Based Plan Activity and Stock-Based Compensation
Significant Stock-Based Plan Activity and Stock-Based Compensation

Stock-Based Compensation Expense
Stock-based compensation expense was recognized in our Consolidated Statements of Operations as follows (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
Cost of sales
$
50

 
$
13

 
$
86

 
$
47

Selling, general and administrative expense
341

 
320

 
859

 
595

Total stock-based compensation expense
$
391

 
$
333

 
$
945

 
$
642



At September 30, 2017, we had total unrecognized stock-based compensation expense of $2.3 million, which will be recognized over the weighted average remaining vesting period of 2.1 years.