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Equity Compensation Plans and Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Shares Authorized under Stock Option and Warrant Plans, by Exercise Price

Stock options outstanding as of December 31, 2016 are as follows (in thousands, except exercise price and life):

 
 
 
 
 
 
Weighted-Average
 
Currently
Exercise Price
 
Options
 
Remaining Life
 
Exercisable
 
$
24.57

 
 
 
13

 
 
0.3
 
 
13

 
 
$
38.00

 
 
 
40

 
 
4.9
 
 
—

 
 
$
40.00

 
 
 
50

 
 
4.0
 
 
10

 
 
 
 
 
 
103

 
 
3.9
 
 
23

 
Schedule of Stock Options Activity
A summary of stock option activity for the years ended December 31, 2016, 2015 and 2014, is as follows (in thousands, except exercise price):

 
2016
 
2015
 
2014
 
 
 
Weighted-
 
 
 
Weighted-
 
 
 
Weighted-
 
 
 
Average
 
 
 
Average
 
 
 
Average
 
Underlying
 
Exercise
 
Underlying
 
Exercise
 
Underlying
 
Exercise
 
Shares
 
Price
 
Shares
 
Price
 
Shares
 
Price
Outstanding at beginning of year
103

 
$
37.34

 
758

 
$
20.67

 
1,052

 
$
19.90

Exercised
—

 
—

 
(655
)
 
18.06

 
(294
)
 
17.93

Outstanding at end of year
103

 
$
37.34

 
103

 
$
37.34

 
758

 
$
20.67

 
 
 
 
 
 
 
 
 
 
 
 
Exercisable at end of year
23

 
$
31.43

 
13

 
$
24.57

 
663

 
$
18.14
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The Company’s net income includes the following compensation costs related to share-based compensation arrangements:
 
Year Ended December 31,
 
2016
 
2015
 
2014
Gross compensation costs:
 
 
 
 
 
Stock options
$
136

 
$
149

 
$
153

Nonvested “restricted” stock
4,038

 
280

 
1,826

Total gross compensation costs
4,174

 
429

 
1,979

 
 
 
 
 
 
Income tax benefits:
 
 
 
 
 
Stock options
(48
)
 
(52
)
 
(54
)
Nonvested “restricted” stock (1)
(782
)
 
(98
)
 
(639
)
Total income tax benefits
(830
)
 
(150
)
 
(693
)
 
 
 
 
 
 
Net compensation expense
$
3,344

 
$
279

 
$
1,286

 
 
 
 
 
 
Tax benefit realized from stock options exercised during the year
$
—

 
$
5,126

 
$
4,141
Schedule of Nonvested Stock Options Activity
The following table summarizes the nonvested common stock award activity during 2016, 2015 and 2014 (in thousands, except fair value amounts):

 
2016
 
2015
 
2014
 
 
 
Weighted-
 
 
 
Weighted-
 
 
 
Weighted-
 
 
 
Average
 
 
 
Average
 
 
 
Average
 
Underlying
 
Fair Value
 
Underlying
 
Fair Value
 
Underlying
 
Fair Value
 
Shares
 
of Grant
 
Shares
 
of Grant
 
Shares
 
of Grant
Outstanding at beginning of year
79

 
$
48.10

 
87

 
$
48.99

 
117

 
$
39.91

Granted
51

 
42.60

 
45

 
47.08

 
47

 
51.08

Vested
(100
)
 
45.96

 
(5
)
 
43.26

 
(37
)
 
46.48

Canceled or forfeited
—

 
—

 
(48
)
 
49.26

 
(40
)
 
42.14

Outstanding at end of year
30

 
45.93

 
79

 
48.10

 
87

 
48.99