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STOCK-BASED COMPENSATION - Schedule of Restricted Stock Summary (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Class of Stock [Line Items] |  |  |
Weighted Average Number of Shares, Restricted Stock | 10,995 |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 30.72 | $ 21.78 | $ 21.70
Stock Issued During Period, Shares, Restricted Stock Award, Gross | 579,302 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  |
[custom:RestrictedStockVestedDuringPeriod] | 558,475 |  |
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited | 9,832 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ 15.00 |  |
Restricted [Member] |  |  |
Class of Stock [Line Items] |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 27.73 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ 10.53 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share | 1,669,711 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Intrinsic Value, Amount Per Share | $ 10.03 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested | $ 1,651,231 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ 17.98 |  |
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueForfeited] | $ 18,480 |  |

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