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Earnings Per Unit
6 Months Ended
Jun. 30, 2011
Notes To Financial Statements [Abstract]  
Earnings Per Unit
Note 11 - Earnings Per Unit
 
Basic earnings per unit is computed by dividing net earnings attributable to unitholders by the weighted average number of units outstanding during each period.  Diluted earnings per unit is computed by adjusting the average number of units outstanding for the dilutive effect, if any, of unit equivalents.  The Company uses the treasury stock method to determine the dilutive effect.
 
The following table provides a reconciliation of the numerators and denominators of the basic and diluted per unit computations for net income (loss):
 
   
Net Income (Loss)
(Numerator)
 
Units
(Denominator)
 
Per Unit
Amount
   
(in thousands)
   
Three months ended June 30, 2011:
         
Net income:
         
Allocated to units
 $237,109       
Allocated to unvested restricted units
  (2,475)      
   $234,634       
Net income per unit:
          
Basic net income per unit
      175,035  $1.34 
Dilutive effect of unit equivalents
      762   (0.01)
Diluted net income per unit
      175,797  $1.33 
              
Three months ended June 30, 2010:
            
Net income:
            
Allocated to units
 $59,786         
Allocated to unvested restricted units
  (592)        
   $59,194         
Net income per unit:
            
Basic net income per unit
      146,124  $0.41 
Dilutive effect of unit equivalents
      338   (0.01)
Diluted net income per unit
      146,462  $0.40 
              
Six months ended June 30, 2011:
            
Net loss:
            
Allocated to units
 $(209,573)        
Allocated to unvested restricted units
  (2,439)        
   $(212,012)        
Net loss per unit:
            
Basic net loss per unit
      169,104  $(1.25)
Dilutive effect of unit equivalents
      -   - 
Diluted net loss per unit
      169,104  $(1.25)
              
Six months ended June 30, 2010:
            
Net income:
            
Allocated to units
 $125,096         
Allocated to unvested restricted units
  (1,336)        
   $123,760         
Net income per unit:
            
Basic net income per unit
      137,874  $0.90 
Dilutive effect of unit equivalents
      360   - 
Diluted net income per unit
      138,234  $0.90 
 
There were no anti-dilutive unit equivalents for the three months ended June 30, 2011.  Basic units outstanding excludes the effect of weighted average anti-dilutive unit equivalents related to 2 million unit options and warrants for the six months ended June 30, 2011.  All equivalent units were anti-dilutive for the six months ended June 30, 2011.  Basic units outstanding excludes the effect of weighted average anti-dilutive unit equivalents related to 1 million unit options and warrants for the three months and six months ended June 30, 2010.