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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Loss Per Common Share (Amendment 2) (Details) - USD ($)
 4 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2020
Denominator:    
Basic and diluted weighted average shares outstanding 5,789,000  
Basic and diluted net income (loss) per share, Common stock $ (0.21)  
Class A Common Stock    
Numerator:    
Allocation of net income (loss), as adjusted   $ 149,461
Denominator:    
Basic and diluted weighted average shares outstanding   19,250,109
Basic and diluted net income (loss) per share, Common stock   $ (0.21)
Class B Common Stock    
Numerator:    
Allocation of net income (loss), as adjusted   $ 38,817
Denominator:    
Basic and diluted weighted average shares outstanding   5,601,728
Basic and diluted net income (loss) per share, Common stock   $ (0.21)