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Computation of Earnings per Common Share (Tables)
 3 Months Ended
Jun. 30, 2013
Computation of Earnings per Common Share [Abstract]  
Computation of Earnings per Common Share
Earnings per common share data were computed as follows (in thousands, except per share amounts):
 
 
Three Months Ended
 
  
June 30,
 
Basic earnings per share:
 
2013
  
2012
 
     
Numerator:
    
Net income
 
$
9,967
  
$
10,468
 
         
Denominator:
        
Weighted-average common shares outstanding
  
213,640
   
217,510
 
         
Basic earnings per share
 
$
0.05
  
$
0.05
 
         
Diluted earnings per share:
        
         
Numerator:
        
Net income
 
$
9,967
  
$
10,468
 
         
Denominator:
        
Weighted-average common shares outstanding
  
213,640
   
217,510
 
Dilutive effect of stock awards
  
6,054
   
3,886
 
         
Total shares
  
219,694
   
221,396
 
         
Diluted earnings per share
 
$
0.05
  
$
0.05