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
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Comprehensive Income.        
Net income $ 19,892 $ 17,325 $ 55,593 $ 48,696
Foreign currency translation adjustments 2,236 (4,334) 8,624 (1,595)
Comprehensive income $ 22,128 $ 12,991 $ 64,217 $ 47,101