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LONG-TERM DEBT (Tables)
 9 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]  
Components of Long-term debt
Long-term debt consisted of the following (in thousands):
 
June 30, 2017
 
September 30, 2016
Industrial development revenue bonds
$
2,000

 
$
2,400

Less current portion
(400
)
 
(400
)
Total long-term debt
$
1,600

 
$
2,000