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EARNINGS PER SHARE (NVE) (Tables)
6 Months Ended
Jun. 30, 2011
EARNINGS PER SHARE (NVE) [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
Three Months Ended June 30,
  
Six Months Ended June 30,
 
   
2011
  
2010
  
2011
  
2010
 
Basic EPS
            
Numerator ($000)
            
              
Net Income
 $12,888  $36,946  $15,218  $35,225 
                  
Denominator (1)
                
Weighted average number of common shares outstanding
  235,867,068   234,995,083   235,697,687   234,927,239 
                  
Per Share Amounts
                
                  
Net Income per share - basic
 $0.05  $0.16  $0.06  $0.15 
                  
Diluted EPS
                
Numerator ($000)
                
                  
Net Income
 $12,888  $36,946  $15,218  $35,225 
                  
Denominator (1)
                
Weighted average number of shares outstanding before dilution
  235,867,068   234,995,083   235,697,687   234,927,239 
Stock options
  42,199   29,132   37,799   28,241 
Non-Employee Director stock plan
  122,737   135,436   143,319   131,690 
Employee stock purchase plan
  2,528   3,538   3,551   4,548 
Restricted Shares
  124,116   66,062   112,678   60,177 
Performance Shares
  1,119,898   905,198   1,032,622   813,557 
   Diluted Weighted Average Number of Shares
  237,278,546   236,134,449   237,027,656   235,965,452 
                  
Per Share Amounts
                
                  
Net income per share - diluted
 $0.05  $0.16  $0.06  $0.15 

(1)
The denominator does not include stock equivalents for options issued under the non-qualified stock option plan due to conversion prices being higher than market prices for all periods.  If the conditions for conversion were met under this plan, 572,957 and 577,357 shares would be included for the three and six months ended June 30, 2011, and 708,031 and 711,330 would be included for the three and six months ended June 30, 2010, respectively.