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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block]
Net income used for calculating basic and diluted EPS is the same for all periods presented. The following table sets forth the computation of shares used for the basic and diluted EPS calculations:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
In thousands
2013
 
2012
 
2013
 
2012
Weighted average shares used for basic EPS
27,244

 
30,454

 
27,391

 
30,605

Dilutive effect of stock options and other share-based awards
351

 
536

 
439

 
625

Dilutive effect of convertible debt
421

 
1,248

 
752

 
1,454

Weighted average shares used for diluted EPS
28,016

 
32,238

 
28,582

 
32,684

Stock options and share-based awards not included in diluted EPS calculation because their effect would be antidilutive
19

 
110

 
67

 
141