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Net Income Per Common Share (Tables)
9 Months Ended
Sep. 30, 2011
Net Income Per Common Share [Abstract] 
Calculation of Net Income per Common Share
The reconciliation of the net income per common share calculation is as follows:
 
   
For the three months ended
  
For the nine months ended
 
($ and shares in thousands, except per share amounts)
 
September 30,
  
September 30,
 
   
2011
  
2010
  
2011
  
2010
 
Net income used for basic and diluted earnings
            
   per common share:
            
Net income attributable to common shareholders of Frontier
 $20,395  $28,995  $107,367  $106,681 
Less:  Dividends paid on unvested restricted stock awards
  (914)  (865)  (2,835)  (2,240)
Total basic and diluted net income attributable to common
                
   shareholders of Frontier
 $19,481  $28,130  $104,532  $104,441 
                  
Basic earnings per common share:
                
Total weighted average shares and unvested restricted stock awards
                
   outstanding - basic
  995,188   993,056   994,642   585,049 
Less:  Weighted average unvested restricted stock awards
  (4,929)  (4,111)  (4,917)  (3,180)
Total weighted average shares outstanding - basic
  990,259   988,945   989,725   581,869 
                  
Net income per share attributable to common shareholders of Frontier
 $0.02  $0.03  $0.11  $0.18 
 
                
Diluted earnings per common share:
                
Total weighted average shares outstanding - basic
  990,259   988,945   989,725   581,869 
Effect of dilutive shares
  535   855   1,478   250 
Effect of dilutive stock units
  490   -   490   - 
Total weighted average shares outstanding - diluted
  991,284   989,800   991,693   582,119 
                  
Net income per share attributable to common shareholders of Frontier
 $0.02  $0.03  $0.11  $0.18