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LEASES - Right-of-use lease assets and lease liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Right-of-use lease assets and lease liabilities |  |
Operating lease right-of use-assets, net | $ 4,272 | $ 0
Current portion of operating lease liabilities | 874 | 0
Long-term operating lease liabilities | 3,733 | 0
Total operating lease liabilities | 4,607 |
Finance right-of-use assets, net | 4,628 | 0
Current portion of finance lease liabilities | 4,557 | 18
Long-term finance lease liabilities | 53 | $ 18
Total finance lease liabilities | $ 4,610 |

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