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FAIR VALUE MEASUREMENTS, Private Placement Warrants Level 3 Fair Value Measurement (Details)
Sep. 30, 2021
Dec. 31, 2020
$ / shares
Fair Value Measurements [Abstract]    
Term 5 years  
Private Placement Warrants [Member]    
Fair Value Measurements [Abstract]    
Term   6 years 5 months 12 days
Warrants [Abstract]    
Warrants exercise price (in dollars per share)   $ 1.36
Private Placement Warrants [Member] | Risk-Free Interest Rate [Member]    
Fair Value Measurements [Abstract]    
Measurement input   0.0057
Private Placement Warrants [Member] | Dividend Yield [Member]    
Fair Value Measurements [Abstract]    
Measurement input   0.00
Private Placement Warrants [Member] | Expected Volatility [Member]    
Fair Value Measurements [Abstract]    
Measurement input   0.175
Private Placement Warrants [Member] | Exercise Price [Member]    
Fair Value Measurements [Abstract]    
Measurement input   11.50
Private Placement Warrants [Member] | Unit Price [Member]    
Fair Value Measurements [Abstract]    
Measurement input   10.36