Registration of securities issued in business combination transactions

FAIR VALUE MEASUREMENTS - Change in Fair Value of Level 3 Fair Value Measurements (Details)

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FAIR VALUE MEASUREMENTS - Change in Fair Value of Level 3 Fair Value Measurements (Details) - Level 3 - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Level 3 Derivative warrant liabilities begin $ 6,615,000 $ 0
Issuance of Public and Private Warrants   16,197,500
Transfer to Level 1 measurement - Public Warrants   (10,212,500)
Change in fair value of derivative warrant liabilities 1,764,000 630,000
Level 3 Derivative warrant liabilities end $ 8,379,000 $ 6,615,000