Annual report pursuant to Section 13 and 15(d)

Employee Benefits Plans - Narrative (Details)

v3.5.0.2
Employee Benefits Plans - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]    
Benefit plan period 180 months  
Weighted-average discount rate 4.30% 4.20%
Estimated future benefit payments, year 2017 $ 348  
Estimated future benefit payments, year 2018 365  
Estimated future benefit payments, year 2019 170  
Estimated future benefit payments, year 2020 210  
Estimated future benefit payments, year 2021 210  
Estimated future benefit payments, thereafter $ 1,429