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Detail of Certain Balance Sheet Accounts - Other Non Current Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Sep. 30, 2016
Other Assets, Noncurrent [Abstract]    
Deposits $ 0 $ 0
Deferred Tax Assets, Noncurrent 0 0
Deferred Compensation Plan Assets 641 599
Investments 558 919
Other, Other Noncurrent Assets 2,583 2,192
Other Assets, Noncurrent, Total $ 3,782 $ 3,710