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Condensed Consolidated Statements Of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
COMPREHENSIVE INCOME:    
Net income $ 48,334 $ 26,705
Foreign currency translation adjustments, net of tax 4,072 7,433
Total comprehensive income $ 52,406 $ 34,138