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DEBT - Annual principal payments (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Sep. 30, 2019
DEBT    
2021 $ 5,991  
2022 8,110  
2023 4,075  
2024 1,608  
2025 5,227  
Thereafter 41  
Long-term Debt $ 25,052 $ 15,087