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Stock-Based Compensation Plans
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation Plans [Text Block]
Stock-Based and Deferred Compensation Plans

The Company may grant stock options, stock appreciation rights, performance-based awards, and time-based restricted shares to officers and key employees under the 2007 Long Term Incentive Plan and stock options, restricted shares, and restricted stock units to directors under the 2007 Stock Option Plan for Non-Employee Directors. The maximum number of shares authorized under these plans is 5.1 million. Shares available for award under the plans at December 31, 2016 were 0.9 million.
Stock Options and Stock Appreciation Rights
Generally, the awards of stock options and stock appreciation rights fully vest three years from grant date and expire ten years from grant date. Beginning in 2012, some of the stock options vested over a three year period based on the achievement of certain performance objectives. The Company generally issues new shares when options to purchase common shares or stock appreciation rights are exercised. The following table summarizes stock options and stock appreciation rights activity:
 
2016
 
2015
 
2014
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Outstanding at January 1,
776

 
$
19.27

 
1,045

 
$
19.27

 
1,225

 
$
18.31

Granted *
—

 
—

 
—

 
—

 
200

 
17.02

Exercised
(236
)
 
16.12

 
(7
)
 
9.15

 
(145
)
 
8.65

Forfeited
(11
)
 
16.16

 
(100
)
 
18.71

 
(43
)
 
19.95

Expired
(139
)
 
22.79

 
(162
)
 
20.05

 
(192
)
 
18.69

Outstanding at December 31,
390

 
$
20.00

 
776

 
$
19.27

 
1,045

 
$
19.27

Expected to vest at December 31,
390

 
$
20.00

 
776

 
$
19.27

 
1,045

 
$
19.27

Exercisable at December 31,
330

 
$
20.56

 
635

 
$
19.65

 
695

 
$
19.91

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
0.4

 
 
 
$
—

 
 
 
$
0.3

 
 
Tax benefit related to compensation expense
$
(0.1
)
 
 
 
$
—

 
 
 
$
(0.1
)
 
 
Intrinsic value of awards exercised
$
1.8

 
 
 
$
0.1

 
 
 
$
1.5

 
 
Cash received from awards exercised
$
3.8

 
 
 
$
0.1

 
 
 
$
1.3

 
 
Grant date fair value of awards vested
$
0.5

 
 
 
$
0.7

 
 
 
$
0.4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Assumes the maximum number of awards that can be earned if the performance conditions are achieved.

The following table summarizes our outstanding and exercisable awards at December 31, 2016:
 
Outstanding
 
Exercisable
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
$8.35
26

 
$
8.35

 
26

 
$
8.35

$12.40 to $17.05
174

 
17.01

 
114

 
17.03

$23.10 to $26.55
190

 
24.35

 
190

 
24.35

Total
390

 
$
20.00

 
330

 
$
20.56


As of December 31, 2016, the aggregate intrinsic value for awards outstanding and exercisable was $1.3 million and $1.0 million, respectively. The weighted-average remaining contractual life for awards outstanding and exercisable is approximately five years and four years, respectively. As of December 31, 2016, there was $0.2 million of unrecognized stock compensation expense, which is expected to be recognized over a weighted-average period of approximately one year.
The fair values at the date of grant were estimated using the Black-Scholes pricing model with the following assumptions:
 
2016
2015
2014
Expected volatility
—

—

35.5
%
Risk-free interest rate
—

—

1.5
%
Expected holding period (in years)
—

—

5

Expected dividends
—

—

0.0
%
Weighted-average grant date fair value
$
—

$
—

$
5.71


The expected volatility assumption used in the Black-Scholes pricing model was based on historical volatility. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. The expected holding period was estimated using the historical exercise behavior of employees and adjusted for abnormal activity. Expected dividends are based on the Company’s history of not paying dividends.
Performance-Based Restricted Awards
Awards granted generally vest over three years and upon the achievement of certain performance-based objectives. Performance-based awards are expensed based on their grant date fair value if it is probable that the performance conditions will be achieved.
The following table summarizes our outstanding performance-based restricted award activity:
 
2016
 
2015
 
2014
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Non-vested at January 1,
721

 
$
16.77

 
349

 
$
19.28

 
307

 
$
19.88

Granted*
307

 
15.45

 
538

 
15.46

 
217

 
17.80

Vested
(51
)
 
22.75

 
(89
)
 
19.00

 
(127
)
 
18.55

Forfeited
(23
)
 
22.35

 
(77
)
 
16.44

 
(48
)
 
18.33

Non-vested at December 31,
954

 
$
15.89

 
721

 
$
16.77

 
349

 
$
19.28

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
3.6

 
 
 
$
3.1

 
 
 
$
1.4

 
 
Tax benefit related to compensation expense
$
(1.3
)
 
 
 
$
(1.1
)
 
 
 
$
(0.5
)
 
 
Grant date fair value of awards vested
$
1.2

 
 
 
$
1.7

 
 
 
$
2.3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Assumes the maximum number of awards that can be earned if the performance conditions are achieved.

As of December 31, 2016, unrecognized compensation expense related to performance-based awards was $8.1 million, which is expected to be recognized over a weighted-average period of approximately one year.

Time-Based Restricted Awards

Awards granted to employees in 2016 vest at the end of a three year period. Awards granted to employees prior to 2016 generally vest in one-third increments over a period of three years. Awards granted to directors in 2016, 2015 and 2014 vest on the first anniversary of the grant date.

The following table summarizes our time-based restricted award activity: 
 
2016
 
2015
 
2014
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Non-vested at January 1,
47

 
$
19.59

 
137

 
$
18.44

 
209

 
$
17.73

Granted
106

 
16.75

 
36

 
17.35

 
35

 
16.04

Vested
(47
)
 
19.59

 
(126
)
 
17.70

 
(103
)
 
16.22

Forfeited
—

 
—

 
—

 
—

 
(4
)
 
17.55

Non-vested at December 31,
106

 
$
16.75

 
47

 
$
19.59

 
137

 
$
18.44

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
1.1

 
 
 
$
1.0

 
 
 
$
1.6

 
 
Tax benefit related to compensation expense
$
(0.4
)
 
 
 
$
(0.3
)
 
 
 
$
(0.6
)
 
 
Grant date fair value of awards vested
$
0.9

 
 
 
$
2.2

 
 
 
$
1.7

 
 


As of December 31, 2016, there was $0.9 million of unrecognized compensation expense related to these restricted stock awards, which is expected to be recognized over a weighted-average period of approximately two years.
Cash-Settled and Other Awards
The Company grants cash-settled stock appreciation rights and performance awards. Beginning in 2012, some of the stock appreciation rights vested over a three year period based on the achievement of certain performance objectives. The final payments of these awards will be indexed to the percentage change in the Company’s stock price from the date of grant. 
No cash-payment awards were issued in 2016 or 2015.  The Company granted cash-payment performance awards of $3.6 million in 2014. For the year ended December 31, 2016, expense incurred for cash-payment awards was $2.2 million. For the years ended December 31, 2015 and 2014, expense of $0.6 million related to cash-payment awards was incurred. 
At December 31, 2016 there was $1.2 million remaining unrecognized compensation expense for cash-settled and other awards, which will primarily be recognized during 2017, assuming the maximum cash payout that can be earned if the performance conditions are achieved.  The aggregate intrinsic value of outstanding and exercisable cash-settled stock appreciation rights at December 31, 2016 was $0.1 million.  
Deferred Compensation Plans
The Company currently has a deferred compensation plan for the Board of Directors. Under the directors deferred compensation plan, each director can defer receipt of all or a part of their director fees and annual retainers, which can be invested in various investment funds including the Company’s common stock. In years prior to 2012, the Company granted 1,200 phantom shares to each non-employee director on the first business day of each year, which are fully vested once a director has five years of service. No phantom shares were granted to non-employee directors in 2016. Distributions to the directors are generally in the form of cash.
The Company previously had a deferred compensation plan for certain executives of the Company.  The executive deferred compensation plan was terminated in the fourth quarter of 2015.  In the fourth quarter of 2016, all amounts due under the plan were distributed to plan participants.   

At December 31, 2016, the number of director deferred common shares was nominal. At December 31, 2015, there were 0.1 million common shares deferred in total for both the director and executive plans. As these awards can be settled in cash, compensation costs each period are based on the change in the Company’s stock price. We recognized compensation expense of $0.1 million and $0.2 million in 2016 and 2015, respectively. A benefit of $0.3 million was recognized in 2014.