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Stock-based Compensation (Tables)
 6 Months Ended
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based Compensation
The following table summarizes the Company’s stock-based compensation expense for the three and six months ended June 30, 2016 and 2015.
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2016
 
2015
 
2016
 
2015
RSUs
$
37

 
$
35

 
$
73

 
$
73

Stock options
8

 
8

 
15

 
16

Stock-based compensation expense, before income taxes
45

 
43

 
88

 
89

Related tax benefit
(17
)
 
(16
)
 
(34
)
 
(34
)
Stock-based compensation expense, net of tax benefit
$
28

 
$
27

 
$
54

 
$
55