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Employee Benefits Plans - Profit Sharing and 401K (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]      
Matching contribution (as a percent) 4.00%    
Contribution to plan $ 360 $ 192 $ 157
Contribution to profit sharing plan $ 165 $ 165 $ 210