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Long-Term Debt (Tables)
9 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Components of Long-term debt
Long-term debt consisted of the following (in thousands):
June 30, 2021September 30, 2020
Industrial development revenue bonds$400 $800 
Less: current portion(400)(400)
Total long-term debt $— $400