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Earnings Per Share
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
3. 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 payment of estimated stock awards from other stock-based compensation plans that are outstanding at the end of each period presented. Diluted earnings per share are calculated as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
In thousands, except per share data
 
2013
 
2012
 
2013
 
2012
Net income (loss)
 
$
(8,233
)
 
$
(10,879
)
 
$
31,532

 
$
30,632

Average common shares outstanding - basic
 
26,987

 
26,847

 
26,962

 
26,813

Additional shares for stock-based compensation plans outstanding
 
—

 
—

 
51

 
89

Average common shares outstanding - diluted
 
26,987

 
26,847

 
27,013

 
26,902

Earnings (loss) per share of common stock - basic
 
$
(0.31
)
 
$
(0.41
)
 
$
1.17

 
$
1.14

Earnings (loss) per share of common stock - diluted
 
$
(0.31
)
 
$
(0.41
)
 
$
1.17

 
$
1.14

Additional information:
 
 
 
 
 
 
 
 
Anti-dilutive shares excluded from net income per diluted common share calculation
 
80

 
107

 
26

 
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