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Long-Term Debt (Tables)
3 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Components of Long-term debt
Long-term debt consisted of the following (in thousands):
 
December 31, 2019
 
September 30, 2019
Industrial development revenue bonds
$
800

 
$
1,200

Less: current portion
(400
)
 
(400
)
Total long-term debt
$
400

 
$
800