Legal, Environmental and Other Contingencies - Schdule of Maturities (Details) $ in Thousands	Sep. 30, 2016 USD ($)	Feb. 11, 2016 item	Sep. 30, 2015 USD ($)
Environmental post-closure monitoring and maintenance activities	$ 683		$ 749
Maturities of long-term obligations (discounted)
Number of leaks reported in entity's chemical cleaning operations | item		1
Long Term Obligations
Maturities of long-term obligations (discounted)
2018	78
2019	59
2020	50
2021	50
2022 and thereafter	371
Long-term obligations (less current portion)	608
Pending litigation
Environmental post-closure monitoring and maintenance activities	$ 683