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INCOME (LOSS) PER SHARE - Reconciliation of basic net loss to diluted net loss per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
INCOME (LOSS) PER SHARE |  |
Net income (loss) applicable to common shareholders | $ 10,895 | $ (4,685)
Diluted net income (loss) applicable to common shareholders | $ 2,573 | $ (4,685)
Weighted average common shares outstanding, basic (in thousands) (in shares) | 13,191 | 10,851
Weighted average common shares outstanding, diluted (in thousands) (in shares) | 13,865 | 10,851
Net income (loss) per share, basic (in dollars per share) | $ 0.83 | $ (0.43)
Net income (loss) per share, diluted (in dollars per share) | $ 0.19 | $ (0.43)

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