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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Current:      
Federal $ 24,286 $ 38,606 $ 60,256
State and foreign 8,493 5,954 9,108
Total 32,779 44,560 69,364
Deferred:      
Federal (6,866) (17,772) 3,337
State and foreign (5,107) 2,794 (1,536)
Total (11,973) (14,978) 1,801
Total income tax expense $ 20,806 $ 29,582 $ 71,165