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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Financial Impact of Stock-Based Compensation Expense Charges
The financial impact of stock-based compensation expense related to the Company’s incentive compensation plan on its operating results are reflected in the table below (in thousands, except for per share data):
 
Year Ended December 31,
 
2017
 
2016
 
2015
Income before taxes
$
6,999

 
$
9,983

 
$
10,293

Net income
$
4,712

 
$
5,829

 
$
6,454

Earnings per common share:
 
 
 
 
 
Basic
$
0.13

 
$
0.16

 
$
0.18

Diluted
$
0.13

 
$
0.16

 
$
0.18
Summary of Stock Option Activity
The following table represents the Company’s stock option activity for the year ended December 31, 2017 (in thousands, except per share data and years):
 
Number of
Shares
 
Weighted
Average
Exercise Price
 
Weighted-
Average
Remaining
Contractual
Term (years)
 
Aggregate
Intrinsic
Value
Options outstanding at January 1, 2017
185

 
$
24.86

 
4.1

 
$
—

Grants
—

 
—

 
—

 
—

Exercised
—

 
—

 
—

 
—

Forfeited or expired
—

 
—

 
n/a

 
n/a

Options outstanding at December 31, 2017
185

 
$
24.86

 
3.1

 
$
—

Exercisable options outstanding at December 31, 2017
185

 
$
24.86

 
3.1

 
$
—

The following table represents the Company’s stock option activity for the year ended December 31, 2015 (in thousands, except per share data and years):
 
Number of
Shares
 
Weighted
Average
Exercise Price
 
Weighted-
Average
Remaining
Contractual
Term (years)
 
Aggregate
Intrinsic
Value
Options outstanding at January 1, 2015
345

 
$
27.98

 
3.7

 
$
59

Grants
—

 
—

 
—

 
—

Exercised
(1
)
 
22.28

 
n/a

 
2

Forfeited or expired
(40
)
 
27.27

 
n/a

 
n/a

Options outstanding at December 31, 2015
304

 
$
28.11

 
3.2

 
$
—

Exercisable options outstanding at December 31, 2015
304

 
$
28.11

 
3.2

 
$
—

The following table represents the Company’s stock option activity for the year ended December 31, 2016 (in thousands, except per share data and years):
 
Number of
Shares
 
Weighted
Average
Exercise Price
 
Weighted-
Average
Remaining
Contractual
Term (years)
 
Aggregate
Intrinsic
Value
Options outstanding at January 1, 2016
304

 
$
28.11

 
3.2

 
$
—

Grants
—

 
—

 
—

 
—

Exercised
—

 
—

 
—

 
—

Forfeited or expired
(119
)
 
33.15

 
n/a

 
n/a

Options outstanding at December 31, 2016
185

 
$
24.86

 
4.1

 
$
—

Exercisable options outstanding at December 31, 2016
185

 
$
24.86

 
4.1

 
$
—
Summary of Restricted Stock Award Activity
The following table summarizes the equity-settled restricted stock unit awards activity during the year ended December 31, 2016 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share
Restricted stock unit awards:
 
 
 
Restricted stock unit awards as of January 1, 2016
726

 
$
30.12

Granted during the period
537

 
6.44

Change in estimated payout of performance unit awards(1)
(95
)
 
27.52

Cancellations during the period
—

 
—

Vested
(348
)
 
23.50

Outstanding, as of December 31, 2016
820

 
$
17.72

 
 
(1) 
Annually the Company reviews the performance compared to pre-determined targets for outstanding performance unit awards. Based on current projections, the Company may increase or decrease the anticipated payout based on its historical operating results and near-term projections.
The following table summarizes the equity-settled restricted stock unit awards activity during the year ended December 31, 2015 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share
Restricted stock unit awards:
 
 
 
Restricted stock unit awards as of January 1, 2015
590

 
$
37.13

Granted during the period(1)
479

 
21.40

Cancellations during the period
(104
)
 
21.84

Vested
(239
)
 
33.60

Outstanding, as of December 31, 2015
726

 
$
30.12

 
 

(1) 
Includes the base share awards for time-based awards. Includes the full amount of both base and bonus share awards for performance-based awards granted during the period, which represents up to 150% of the aggregate total of the base share awards.
The following table summarizes the equity-settled restricted stock unit awards activity during the year ended December 31, 2017 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share
Restricted stock unit awards:
 
 
 
Restricted stock unit awards as of January 1, 2017
820

 
$
17.72

Granted during the period
615

 
5.57

Change in estimated payout of performance unit awards(1)
20

 
21.84

Cancellations during the period
—

 
—

Vested
(587
)
 
15.39

Outstanding, as of December 31, 2017
868

 
$
10.76

 
 
(1) 
Annually the Company reviews the performance compared to pre-determined targets for outstanding performance unit awards. Based on current projections, the Company may increase or decrease the anticipated payout based on its historical operating results and near-term projections.
Schedule of Other Share-based Compensation, Activity [Table Text Block]
The following table summarizes the cash-settled restricted stock unit awards activity during the year ended December 31, 2016 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share(1)
Cash-Settled restricted stock unit awards:
 
 
 
Cash-settled restricted stock unit awards as of January 1, 2016
82

 
$
30.61

Granted during the period(2)
991

 
6.14

Cancellations during the period
(5
)
 
19.05

Vested
(15
)
 
34.32

Outstanding, as of December 31, 2016
1,053

 
$
7.60

 
 
(1) 
The weighted-average fair value per share is determined by the stock price on the date of grant for time-based shares.
(2) 
Includes only the base shares awarded for both time-based and performance based awards. The performance-based awards have the potential to vest at up to 150% of the aggregate total of the base share awards.
The following table summarizes the cash-settled restricted stock unit awards activity during the year ended December 31, 2017 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share(1)
Cash-Settled restricted stock unit awards:
 
 
 
Cash-settled restricted stock unit awards as of January 1, 2017
1,053

 
$
7.60

Granted during the period(2)
919

 
6.68

Cancellations during the period
(4
)
 
15.31

Vested
(180
)
 
11.65

Outstanding, as of December 31, 2017
1,788

 
$
6.70

 
 
(1) 
The weighted-average fair value per share is determined by the stock price on the date of grant for time-based shares.
(2) 
Includes only the base shares awarded for both time-based and performance based awards. The performance-based awards have the potential to vest at up to 150% of the aggregate total of the base share awards.
The following table summarizes the cash-settled restricted stock unit awards activity during the year ended December 31, 2015 (in thousands, except per share data):
 
Number of
Shares
 
Weighted Avg.
Fair Value Per Share(1)
Cash-Settled restricted stock unit awards:
 
 
 
Cash-settled restricted stock unit awards as of January 1, 2015
153

 
$
38.43

Granted during the period
47

 
21.84

Cancellations during the period
(1
)
 
30.87

Vested
(117
)
 
37.25

Outstanding, as of December 31, 2015
82

 
$
30.61

 
 
(1) 
The weighted-average fair value per share is determined by the stock price on the date of grant for time-based shares.
Summary of Weighted Average Assumptions and Fair Value of Options under ESPP
The fair value of the employees’ stock purchase rights granted under the ESPP was estimated using the Black-Scholes model with the following assumptions for the years ended December 31, 2017 and 2016: 
 
2017
 
 
2016
 
Dividend yield
—

%
 
—

%
Expected volatility
93.2

%
 
91.6

%
Risk-free interest rate
1.3

%
 
0.5

%
Expected term (months)
6

 
 
6

 
Weighted-average grant-date fair value per share
$
1.16

 
 
$
3.14