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Comprehensive Income
9 Months Ended
Sep. 30, 2011
Comprehensive Income [Abstract] 
Comprehensive Income
10 — Comprehensive Income
The following table provides a reconciliation of net income to comprehensive income (in thousands):
                                 
    Three months ended     Nine months ended  
    September 30,     September 30,  
    2011     2010     2011     2010  
Net income
  $ 16,045     $ 14,159     $ 35,830     $ 22,084  
Other comprehensive loss:
                               
Change in fair value of cash flow swaps, net of tax
    (596 )     (680 )     (1,089 )     (680 )
Unrealized loss on available-for-sale securities, net of tax
    —       —       (587 )     —  
 
                       
Comprehensive income
  $ 15,449     $ 13,479     $ 34,154     $ 21,404