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Earnings Per Share
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
Basic earnings per share are computed using net income and the weighted average number of common shares outstanding for each period presented. Diluted earnings per share are computed in the same manner, except it uses the weighted average number of common shares outstanding plus the effects of the assumed exercise of stock options and the payment of estimated stock awards from other stock-based compensation plans that are outstanding at the end of each period presented. Antidilutive stock awards are excluded from the calculation of diluted earnings per common share. Diluted earnings (loss) per share are calculated as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
In thousands, except per share data
 
2017
 
2016
 
2017
 
2016
Net income (loss)
 
$
(8,495
)
 
$
(8,040
)
 
$
34,544

 
$
30,620

Average common shares outstanding - basic
 
28,678

 
27,554

 
28,653

 
27,504

Additional shares for stock-based compensation plans
(See Note 5)
 
—

 
—

 
81

 
125

Average common shares outstanding - diluted
 
28,678

 
27,554

 
28,734

 
27,629

Earnings (loss) per share of common stock - basic
 
$
(0.30
)
 
$
(0.29
)
 
$
1.21

 
$
1.11

Earnings (loss) per share of common stock - diluted
 
$
(0.30
)
 
$
(0.29
)
 
$
1.20


$
1.11

Additional information:
 
 
 
 
 
 
 
 
Antidilutive shares
 
96

 
159

 
15

 
5