FAIR VALUE MEASUREMENTS (Tables)
 3 Months Ended
Mar. 31, 2021
FAIR VALUE MEASUREMENTS [Abstract]  
Gross Holding Gains and Fair Value of Held-To-Maturity Securities
The following table presents information about the gross holding gains and fair value of held-to-maturity securities at December 31, 2020:


Held-To-Maturity
 
Amortized
Cost
  
Gross
Holding
Loss
  
Fair Value
 
December 31, 2020
U.S. Treasury Securities (Matured on 3/11/2021)
 
$
312,507,938
  
$
(10,694
)
 
$
312,497,244
 
Assets and Liabilities Measured on Recurring Basis
The following table presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis at March 31, 2021 and December 31, 2020, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value:

Assets:
    
March 31,
2021
   
December 31,
2020
 
Marketable securities held in Trust Account
  
1
  
$
312,541,091
 1 
$
312,497,244
 
              
Liabilities:
             
Warrant Liability – Public Warrants
  
1
  
$
20,312,500
 3 
$
20,625,000
 
Warrant Liability – Private Placement Warrants
  
3
  
$
10,820,500
 3 
$
10,982,000
 
Private Placement Warrants Level 3 Fair Value Measurement
The fair value of the Private Placement Warrants was estimated at March 31, 2021 and December 31, 2020 to be $1.34 and $1.36, respectively, using the modified Black-Scholes option pricing model and the following assumptions:

  
March 31,
2021
  
December 31,
2020
 
Risk-free interest rate
  
1.21
%
  
0.57
%
Expected Term
  
6.20
   
6.45
 
Dividend yield
  
0.00
%
  
0.00
%
Expected volatility
  
18.3
%
  
17.5
%
Exercise price
 
$
11.50
  
$
11.50
 
Unit Price
 
$
9.95
  
$
10.36
 
Changes in Fair Value of Warrant Liabilities
The following table presents the changes in the fair value of warrant liabilities:

​
 
Private Placement
  
Public Warrants
  
Warrant Liabilities
 
Fair value as of December 31, 2020
 
$
10,982,000
  
$
20,625,000
  
$
31,607,000
 
Change in fair value
  
(161,500
)
  
(312,500
)
  
(474,000
)
Fair value as of March 31, 2021
 
$
10,820,500
  
$
20,312,500
  
$
31,133,000