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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table sets forth the weighted average fair value of stock options and the assumptions used to estimate the fair value of the stock options using the Black-Scholes option valuation model:
 
2015
 
2014
 
2013
Weighted average fair value of stock options granted
$
2.65

 
$
3.79

 
$
12.60

Volatility
55.71
%
 
50.93
%
 
76.74
%
Expected life in years
4.75

 
3.9

 
5.0

Risk-free interest rate
1.51
%
 
1.25
%
 
0.84
%
Dividend yield
—

 
—

 
—
Schedule of Stock-based Compensation, Stock Options and Stock Appreciation Rights Award Activity
The following table summarizes stock option and SAR activity for the years ended December 31, 2015, 2014, and 2013:
 
Stock Options
 
SARs
 
Shares
 
Weighted
Average
Exercise
Price
 
Shares
 
Weighted
Average
Exercise
Price
Outstanding at December 31, 2012
370,000

 
$
30.20

 
68,865

 
$
13.83

Granted
190,452

 
20.41

 
—

 
—

Exercised
(13,027
)
 
10.77

 
(6,617
)
 
13.14

Canceled/forfeited
(131,855
)
 
29.30

 
(12,039
)
 
15.40

Outstanding at December 31, 2013
415,570

 
27.36

 
50,209

 
14.15

Granted
415,172

 
9.45

 
—

 
—

Exercised
—

 
—

 
—

 
—

Canceled/forfeited
(232,396
)
 
23.94

 
(3,637
)
 
15.40

Outstanding at December 31, 2014
598,346

 
16.26

 
46,572

 
14.06

Granted
310,028

 
5.57

 
—

 
—

Exercised
—

 
—

 
—

 
—

Canceled/forfeited
(238,365
)
 
12.69

 
—

 
—

Outstanding at December 31, 2015
670,009

 
$
12.58

 
46,572

 
$
14.06

 
 
Options Outstanding
 
Options Exercisable
Range of
Exercise Price
 
Number
Outstanding
 
Weighted Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Life (Years)
 
Number
Exercisable
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual Life (Years)
$ 0.00-$10.00
 
439,746

 
$
7.33

 
8.71
 
75,613

 
$
9.41

 
7.49
$10.00-$20.00
 
71,540

 
13.42

 
7.56
 
40,823

 
14.56

 
7.31
$20.00-$30.00
 
149,992

 
25.63

 
6.31
 
126,828

 
25.98

 
6.17
$30.00-$40.00
 
3,134

 
39.90

 
1.22
 
3,134

 
39.90

 
1.22
$40.00-$50.00
 
3,336

 
48.50

 
2.03
 
3,336

 
48.50

 
2.03
$50.00-$60.00
 
2,261

 
51.40

 
0.14
 
2,261

 
51.40

 
0.14
 
 
670,009

 
$
12.58

 
 
 
251,995

 
$
19.86

 
 
At December 31, 2015, there was $0.4 million of unrecognized compensation cost related to non-vested stock options to be recognized over a weighted average period of 1.1 years.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes restricted stock and restricted stock units activity for the years ended December 31, 2015, 2014, and 2013:
 
Restricted Stock
 
Restricted Stock Units
 
Number of
Shares
 
Weighted
Average
Grant Date
Fair Value
 
Number of
Units
 
Weighted Average
Fair Value
Outstanding at December 31, 2012
239,698

 
$
25.38

 
11,411

 
$
24.14

Granted
573,467

 
15.38

 
—

 
—

Vested
(90,963
)
 
26.83

 
(11,411
)
 
22.74

Cancelled/Forfeited
(109,116
)
 
23.30

 
—

 
—

Outstanding at December 31, 2013
613,086

 
16.68

 
—

 
—

Granted
695,897

 
9.83

 
—

 
—

Vested
(234,103
)
 
17.16

 
—

 
—

Cancelled/Forfeited
(172,881
)
 
11.87

 
—

 
—

Outstanding at December 31, 2014
901,999

 
12.19

 
—

 
—

Granted
1,180,384

 
5.49

 
—

 
—

Vested
(317,122
)
 
13.38

 
—

 
—

Cancelled/Forfeited
(257,849
)
 
7.59

 
—

 
—

Outstanding at December 31, 2015
1,507,412

 
$
7.49

 
—

 
$
—
Share-based Compensation, Performance Shares Award Outstanding Activity
The following table summarizes performance shares and performance units’ activity for the years ended December 31, 2015, 2014, and 2013:
 
Performance Shares
 
Performance Units
 
Number of
Shares
 
Weighted
Average
Grant Date
Fair Value
 
Number of
Units
 
Weighted Average
Fair Value
Outstanding at December 31, 2012
109,159

 
$
26.92

 
34,239

 
$
39.78

Granted
173,773

 
23.35

 
34,239

 
38.02

Vested
(4,160
)
 
30.97

 
(68,478
)
 
38.02

Cancelled/Forfeited
(68,377
)
 
34.49

 
—

 
—

Outstanding at December 31, 2013
210,395

 
28.04

 
—

 
—

Granted
358,398

 
12.21

 
—

 
—

Vested
(34,611
)
 
27.18

 
—

 
—

Cancelled/Forfeited
(17,352
)
 
27.15

 
—

 
—

Outstanding at December 31, 2014
516,830

 
17.61

 
—

 
—

Granted
809,293

 
6.97

 
—

 
—

Vested
—

 
—

 
—

 
—

Cancelled/Forfeited
(190,988
)
 
15.62

 
—

 
—

Outstanding at December 31, 2015
1,135,135

 
$
10.35

 
—

 
$
—