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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2011
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share

The amounts used in computing earnings per share and the weighted average number of shares of potentially dilutive securities are as follows:

(in thousands, except market price data) 2011 2010 2009  
         
Net income/(loss) available to common shareholders $34,938 $37,636 ($33,458)  
         
Weighted average number of shares:        
         
   Weighted average number of shares used in        
   calculating basic net income/(loss) per share 31,262 31,072 30,612  
         
Effect of dilutive stock-based compensation plans:        
         
   Stock options   104 44   -  
         
   Long-term incentive plan   144 93   -  
         
Weighted average number of shares used in        
calculating diluted net income/(loss) per share 31,510 31,209 30,612  
         
Effect of stock-based compensation plans        
that were not included in the computation of        
diluted earnings per share because        
to do so would have been antidilutive   -   - 82  
         
Average market price of common stock used        
for calculation of dilutive shares $23.44 $20.49 $14.11  
         
Net income/(loss) per share:        
         
   Basic $1.12 $1.21 ($1.09)  
         
   Diluted $1.11 $1.21 ($1.09)  
         
As of December 31, 2011, 2010, and 2009, there was no dilution resulting from the convertible debt instrument, purchased call option, and warrant that are described in Note 13.