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Comprehensive Income (Loss)
9 Months Ended
Sep. 30, 2011
Comprehensive Income (Loss) [Abstract] 
Comprehensive Income (Loss)
10.  
Comprehensive Income (Loss)
   
The components of comprehensive income (loss) were as follows:
                                 
    For the Three Months Ended September 30,     For the Nine Months Ended September 30,  
    2011     2010     2011     2010  
Net income attributable to common stock
  $ 2,906     $ 1,932     $ 3,105     $ 5,295  
Change in derivative instrument fair value, net of tax expense1
    1,280       1,675       2,954       3,438  
Reclassification to earnings
    (2,322 )           (6,915 )      
 
                       
Comprehensive income (loss)
  $ 1,864     $ 3,607     $ (856 )   $ 8,733  
 
                       
     
(1)  
The change in derivative instrument fair value is net of tax (benefit) totaling $(666) and $924 for the three months ended September 30, 2011 and 2010, respectively. The change in derivative instrument fair value is net of tax totaling $(2,099) and $1,975 for the nine months ended September 30, 2011 and 2010, respectively.
The components of accumulated other comprehensive income were as follows:
                 
    September 30,     December 31,  
    2011     2010  
Net change in derivative instrument fair value, net of tax expense of $927 and $3,027
  $ 1,608     $ 5,568  
 
           
Total accumulated other comprehensive income, net
  $ 1,608     $ 5,568