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LONG-TERM DEBT (Components of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Sep. 30, 2016
Debt Disclosure [Abstract]    
Industrial development revenue bonds $ 2,000 $ 2,400
Less current portion (400) (400)
Total long-term debt and capital lease obligations $ 1,600 $ 2,000