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Comprehensive Income
9 Months Ended
Sep. 30, 2011
Equity [Abstract] 
COMPREHENSIVE INCOME
13. COMPREHENSIVE INCOME
     The following table provides a reconciliation of net income to comprehensive income for the three and nine months ended September 30, 2011 and 2010:
                                 
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2011     2010     2011     2010  
            (In thousands)          
Net income
  $ 21,494     $ 18,985     $ 61,539     $ 39,735  
Other comprehensive income (loss):
                               
Change in fair value of interest rate swaps
    (9,842 )     1,522       (9,528 )     3,904  
Unrealized gain (loss) on investments
    (11 )     13       (22 )     (11 )
Unrealized gain (loss) on currency translation
    (978 )     1,712       319       201  
 
                       
Total comprehensive income
  $ 10,663     $ 22,232     $ 52,308     $ 43,829