Annual report pursuant to Section 13 and 15(d)

Employee Benefits Plans - Schedule of MSP Benefit Expense Charged to Costs and Expenses (Details)

v3.8.0.1
Employee Benefits Plans - Schedule of MSP Benefit Expense Charged to Costs and Expenses (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Retirement Benefits [Abstract]      
Service cost $ 200 $ 213 $ 195
Interest cost 140 210 197
Recognized actuarial loss adjustment (78) (5) 231
Total $ 262 $ 418 $ 623