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FAIR VALUE MEASUREMENTS - Summary of the changes in the fair value of the Private Placement Warrants (Details) - Private Placement Warrants
6 Months Ended
Dec. 31, 2020
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Fair value, June 19, 2020 $ 11,526,668
Loss on change in fair value (1) 5,596,667
Fair value, December 31, 2020 $ 17,125,335