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FAIR VALUE OF FINANCIAL INSTRUMENTS - Change in fair value of warrants (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]          
Change in fair value   $ (782,500) $ 0 $ (782,500) $ 0
Common warrants.          
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]          
Fair value at issuance February 24, 2022 $ 3,350,400        
Change in fair value (782,500)        
Fair Value at March 31, 2022 $ 2,567,900 $ 2,567,900   $ 2,567,900