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Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
2016 $ 16,475    
2017 16,639    
2018 16,490    
2019 15,207    
2020 14,251    
Operating Leases, Thereafter 61,651    
Total Operating Lease Payments 140,713    
Lease and Rental Expense $ 32,500 $ 31,700 $ 32,400
Minimum [Member]      
Operating Leased Assets [Line Items]      
Lessee Leasing Arrangements, Operating Leases, Term of Contract 1 year    
Maximum [Member]      
Operating Leased Assets [Line Items]      
Lessee Leasing Arrangements, Operating Leases, Term of Contract 19 years