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14.STOCK-BASED COMPENSATION - Schedule of Restricted Stock Summary (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Class of Stock [Line Items] |  |
Number of Option Shares, Beginning Balance | 1,418,938 | 1,547,029
Number of Option Shares, Ending Balance | 1,970,458 | 1,418,938
Weighted Average Outstanding at Beginning Balance | $ 13.03 | $ 30.72
Weighted Average Exercise, Granted | 0 | 0
Weighted Average Exercise, Expired | 8 | 39.38
Weighted Average Exercise Ending Balance | $ 13.49 | $ 13.03
Restricted [Member] |  |
Class of Stock [Line Items] |  |
Number of Option Shares, Beginning Balance | 5,448,548 | 10,995
Number of Shares, Granted | 3,880,552 | 7,306,250
Number of Shares, Vested | (3,813,617) | (1,757,938)
Number of Shares, Cancelled | (40,000) |
Number of Shares, Forfeited | (4,048) | (110,759)
Number of Option Shares, Ending Balance | 5,471,435 | 5,448,548
Weighted Average Outstanding at Beginning Balance | $ 4.93 | $ 27.73
Weighted Average Exercise, Granted | 3.65 | 7.18
Weighted Average Exercise, Vested | 4.58 | 13.37
Weighted Average Exercise, Expired | 29.34 | 15.27
Weighted Average Exercise Ending Balance | $ 4.18 | $ 4.93
Aggregate Intrinsic Value Outstanding at Beginning | $ 17,326 | $ 0
Aggregate Intrinsic Value Outstanding at Ending | $ 20,846 | $ 17,326

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