XML 120 R105.htm IDEA: XBRL DOCUMENT v3.8.0.1
Aggregate Minimum Future Amounts Payable under Non-Cancelable Railcar Equipment Leases (Detail) - Railcar Equipment
$ in Thousands
Aug. 31, 2017
USD ($)
Operating Leased Assets [Line Items]  
2018 $ 7,363
2019 6,177
2020 4,832
2021 1,792
2022 1,792
Thereafter 3,602
Operating Leases, Future Minimum Payments Due $ 25,558