Equity Compensation (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan
The amounts of equity-based compensation expense recognized as part of selling, general and administrative expenses in All Other in business segment reporting was as follows (in thousands):
 
2016
 
2015
 
2014
Non-qualified stock options
$
745

 
$
1,228

 
$
3,356

Restricted stock and restricted stock units
5,039

 
2,785

 
2,270

Performance shares and performance share units
1,110

 
—

 
—

Total stock-based compensation expense
$
6,894

 
$
4,013

 
$
5,626
Schedule of Unrecognized Compensation Cost, Nonvested Awards
As of December 31, 2016, unrecognized compensation expense related to equity-based compensation arrangements granted under the company's 2013 Plan and previous plans, which is related to non-vested options and shares, was as follows (in thousands):
 
2016
 
2015
 
2014
Non-qualified stock options
$
175

 
$
1,059

 
$
2,600

Restricted stock and restricted stock units
8,740

 
9,476

 
4,461

Performance shares and performance share units
3,134

 
—

 
—

Total stock-based compensation expense
$
12,049

 
$
10,535

 
$
7,061
Schedule of Share-based Compensation, Stock Options, Activity
Generally, non-qualified stock option awards typically have a term of ten years and were granted with an exercise price per share equal to the fair market value of the company’s Common Shares on the date of grant. The company expects the compensation expense to be recognized over a weighted-average period of approximately 2 years.

The following table summarizes information about stock option activity for the three years ended 2016, 2015 and 2014:  
 
2016
 
Weighted
Average
Exercise
Price
 
2015
 
Weighted
Average
Exercise
Price
 
2014
 
Weighted
Average
Exercise
Price
Options outstanding at January 1
2,942,783

 
$
21.22

 
3,600,132

 
$
22.74

 
4,533,782

 
$
23.86

Granted
—

 
—

 
—

 
—

 
8,977

 
16.71

Exercised
(1,250
)
 
13.82

 
(172,218
)
 
13.95

 
(33,810
)
 
14.16

Canceled
(398,801
)
 
21.47

 
(485,131
)
 
34.98

 
(908,817
)
 
28.57

Options outstanding at December 31
2,542,732

 
$
21.19

 
2,942,783

 
$
21.22

 
3,600,132

 
$
22.74

Options exercise price range at December 31
$ 13.37 to

 
 
 
$ 13.37 to

 
 
 
$ 13.37 to

 
 
 
$
33.36

 
 
 
$
33.36

 
 
 
$
47.80

 
 
Options exercisable at December 31
2,513,614

 
 
 
2,656,983

 
 
 
2,954,082

 
 
Shares available for grant at December 31*
3,891,121

 
 
 
2,659,562

 
 
 
3,654,426

 
 
Schedule of Share-based Compensation, Stock Options Outstanding
The following table summarizes information about stock options outstanding at December 31, 2016:
 
Options Outstanding
 
Options Exercisable
Exercise Prices
Number
Outstanding
At 12/31/16
 
Weighted Average
Remaining
Contractual Life Years
 
Weighted Average
Exercise Price
 
Number
Exercisable
At 12/31/16
 
Weighted Average
Exercise Price
$ 13.37 – $20.00
686,671

 
5.7
 
$
14.13

 
657,553

 
$
14.07

$ 20.01 – $25.00
1,099,977

 
2.8
 
22.57

 
1,099,977

 
22.57

$ 25.01 – $30.00
751,588

 
2.6
 
25.55

 
751,588

 
25.55

$ 30.01 – $33.36
4,496

 
4.4
 
33.36

 
4,496

 
33.36

Total
2,542,732

 
3.5
 
$
21.19

 
2,513,614

 
$
21.39
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The fair value of each option granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions for awards granted in 2014 as no options were granted in 2016 or 2015:
 
 
2014
Expected dividend yield
 
0.3
%
Expected stock price volatility
 
36.8
%
Risk-free interest rate
 
1.76
%
Expected life in years
 
6.1

Forfeiture percentage
 
13.0
%
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes information about restricted shares and restricted share units (primarily for non-U.S. recipients):
 
2016
Weighted Average Fair Value
 
2015
Weighted Average Fair Value
 
2014
Weighted Average Fair Value
Stock / Units unvested at January 1
641,505

$
18.89

 
312,423

$
17.91

 
264,878

$
16.69

Granted
486,711

12.62

 
480,839

19.09

 
218,276

19.36

Vested
(139,298
)
17.86

 
(56,976
)
16.47

 
(93,140
)
17.62

Canceled
(110,562
)
16.60

 
(94,781
)
18.11

 
(77,591
)
17.58

Stock / Units unvested at December 31
878,356

$
15.87

 
641,505

$
18.89

 
312,423

$
17.91

 
 
 
 
 
 
 
 
 
Share-based Compensation, Performance Shares Award Unvested Activity
The following table summarizes information about performance shares and performance share units (for non-U.S. recipients):
 
2016
 
Weighted Average Fair Value
 
2015
 
Weighted Average Fair Value
 
2014
 
Weighted Average Fair Value
Shares / Units unvested at January 1
198,401

 
$
19.50

 
121,644

 
$
20.05

 
—

 
$
—

Granted
234,402

 
12.82

 
114,257

 
18.95

 
152,800

 
20.05

Vested
—

 
—

 
—

 
—

 
—

 
—

Canceled
(123,335
)
 
19.14

 
(37,500
)
 
19.62

 
(31,156
)
 
20.05

Shares / Units unvested at December 31
309,468

 
$
14.58

 
198,401

 
$
19.50

 
121,644

 
$
20.05