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Stock-Based Employee Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total Compensation Expense Recognized for Employee Stock-based Compensation
Total compensation expense recognized for employee stock-based compensation for the years ended December 31, 2017, 2016 and 2015 was as follows:
 
Employee Stock-Based Compensation
Classification of expense
2017
 
2016
 
2015
(In thousands)
 
 
 
 
 
Marketing, selling and administrative expenses
$
69,459

 
$
32,659

 
$
36,073

Total compensation expense
$
69,459

 
$
32,659

 
$
36,073
Summary Stock Option Activity
Stock option activity and information about stock options outstanding are summarized in the following table:
Stock Option Activity
Number of
Options
 
Weighted-
Average
Exercise
Price
 
Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value(1)


 

 
(years)
 
(in thousands)
Outstanding at January 1, 2017
346,310

 
$
32.82

 
2.39

 
$
17,221

Granted
—

 
—

 
—

 
—

Exercised
(72,000
)
 
$
35.07

 
—

 
—

Canceled
(1,586
)
 
$
46.18

 
—

 
—

Outstanding at December 31, 2017
272,724

 
$
32.15

 
1.41

 
$
24,053

Vested at December 31, 2017
272,724

 
$
32.15

 
1.41

 
$
24,053

Options Exercisable at December 31, 2017
272,724

 
$
32.15

 
1.41

 
$
24,053

___________________________________________________________________
(1)
The intrinsic value represents the amount by which the fair value of stock exceeds the option exercise price
Summary of Restricted Stock Activity
Restricted stock activity is summarized in the following table:
Restricted Stock Units Activity
Number of
Awards
 
Weighted-
Average
Grant Date
Fair Value
Non-vested share units at January 1, 2017
748,516

 
$
61.95

Granted
425,170

 
$
99.03

Vested
(376,992
)
 
$
59.62

Canceled
(58,795
)
 
$
71.47

Non-vested share units expected to vest as of December 31, 2017
737,899

 
$
83.78
Summary of Performance share activity
Performance share units activity is summarized in the following table:
Performance Share Units Activity
Number of
Awards
 
Weighted-
Average
Grant Date
Fair Value
Non-vested share units at January 1, 2017
342,152

 
$
61.78

Granted
140,542

 
$
84.16

Vested
(105,615
)
 
$
45.62

Canceled
(23,929
)
 
$
71.37

Non-vested share units expected to vest as of December 31, 2017
353,150

 
$
74.87
Senior Officers  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Restricted Stock Activity
Restricted stock awards activity is summarized in the following table:
Restricted Stock Awards Activity
Number of
Awards
 
Weighted-
Average
Grant Date
Fair Value
Non-vested share units at January 1, 2017
132,228

 
$
66.93

Granted
137,948

 
$
95.04

Vested
—

 
$
—

Canceled
—

 
$
—

Non-vested share units expected to vest as of December 31, 2017
270,176

 
$
81.28