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DEBT ARRANGEMENTS - Annual principal payments (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Sep. 30, 2018
DEBT ARRANGEMENTS    
2020 $ 1,109  
2021 1,180  
2022 4,488  
2023 2,680  
2024 $ 205  
Long-term Debt, Total   $ 9,614