Quarterly report pursuant to Section 13 or 15(d)

COMPREHENSIVE INCOME (Details)

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COMPREHENSIVE INCOME (Details) (USD $)
In Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Comprehensive income:        
Net Income $ 29,415 $ 25,513 $ 79,116 $ 70,796
Foreign currency translation (1,417) 305 (1,058) 283
Total comprehensive income $ 27,998 $ 25,818 $ 78,058 $ 71,079