Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Restricted Cash) (Details)

v3.5.0.2
Summary of Significant Accounting Policies (Restricted Cash) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Sep. 30, 2015
Other Commitments [Line Items]    
Restricted cash $ 893 $ 638
Superfund Site | Environmental Clean Up Costs    
Other Commitments [Line Items]    
Restricted cash $ 200 $ 200