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Commitments and Contingencies (Operating Leases) (Details) - USD ($)
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]      
Operating leases, rental expense $ 1,200,000 $ 1,000,000 $ 1,000,000
Operating leases, term of contract 1 year    
Future minimum rental commitments $ 2,200,000    
Future minimum rental commitments, due in fiscal 2015 900,000    
Future minimum rental commitments, due in fiscal 2016 600,000    
Future minimum rental commitments, due in fiscal 2017 400,000    
Future minimum rental commitments, due in fiscal 2018 200,000    
Future minimum rental commitments, due in fiscal 2019 100,000    
Future minimum rental commitments, due thereafter $ 0