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Income Taxes (Components of Income Tax Expense (Benefit)) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Current:      
Federal $ 29,438 $ 47,862 $ 48,041
State 4,760 4,452 6,237
Foreign 10,612 11,594 9,743
Deferred:      
Federal 13,904 (9,632) (8,680)
State 885 (200) (552)
Foreign (5,970) 2,142 543
Income tax expense $ 53,629 $ 56,218 $ 55,332