FAIR VALUE MEASUREMENTS (Tables)
   | 
12 Months Ended | 
Dec. 31, 2020  | 
| FAIR VALUE MEASUREMENTS | 
 
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| Schedule of assets measured at fair value on a recurring basis | 
 
		
			 
		 
		
			
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						December 31, 
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						December 31, 
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						Description 
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						Level 
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						 2020 
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						 2019 
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						Assets: 
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						Cash and marketable securities held in Trust Account 
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						  1 
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						$ 
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						 696,957,196 
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						$ 
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						 695,295,418 
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						Liabilities: Warrant Liabilities – Public Warrants 
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						  1 
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						 45,310,000 
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						 32,660,000 
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						Warrant Liabilities – Private Placement Warrants 
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						  3 
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						 32,548,000 
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						 23,700,000 
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						Prosus Agreement liability 
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						  3 
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						 50,481,190 
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						  — 
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						Conversion option liability 
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						  3 
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						 1,604,359 
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				 | 
				
					 
						  
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						  — 
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| Schedule of fair value of warrant liabilities | 
 
		
			
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						Warrant  
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						Private Placement 
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						Public 
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						Liabilities 
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						Fair value as of April 11, 2019 (inception) 
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						$ 
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						  — 
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						$ 
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						  — 
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						$ 
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						  — 
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						Initial measurement on July 1, 2019 
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						 15,800,000 
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						 22,310,000 
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						 38,110,000 
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				| 
					 
						Change in valuation inputs or other assumptions 
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						 7,900,000 
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						 10,350,000 
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						 18,250,000 
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						Fair value as of December 31, 2019 
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						 23,700,000 
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						 32,660,000 
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						 56,360,000 
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						Change in valuation inputs and other assumptions 
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						 8,848,000 
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						 12,650,000 
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						 21,498,000 
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						Fair value as of December 31, 2020 
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						$ 
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						 32,548,000 
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						$ 
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						 45,310,000 
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						$ 
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						 77,858,000 
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| Private Placement Warrants | 
 
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| FAIR VALUE MEASUREMENTS | 
 
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| Schedule of quantitative information regarding Level 3 fair value measurements inputs | 
 
		
			
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						As of November 2, 
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						As of December 31, 
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				| 
					 
						  
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						 2020 
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						 2020 
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						Exercise price 
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						$ 
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						 11.50 
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						$ 
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						 11.50 
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						Stock price 
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						$ 
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						 9.97 
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						$ 
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						 10.35 
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						Volatility 
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						 30.0 
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						%   
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						 30.0 
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						% 
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						Probability of completing a Business Combination 
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						 85.0 
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						%   
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						 85.0 
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						% 
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						Term 
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						 5.28 
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						 5.11 
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						Risk-free rate 
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						 0.41 
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						%   
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						 0.38 
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						% 
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						Dividend yield 
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						 0.0 
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						%   
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						 0.0 
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						% 
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| Prosus Agreement Liability | 
 
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| FAIR VALUE MEASUREMENTS | 
 
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| Schedule of quantitative information regarding Level 3 fair value measurements inputs | 
 
		
			 
		 
		
			 
		 
		
			
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						As of October 12,  
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						As of December 31, 
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				| 
					 
						  
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						2020 
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						 2020 
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						Exercise price 
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						$ 
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						*400.0 
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						M   
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						$ 
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						 500.0 
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						M 
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						Underlying value 
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						$ 
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						 436.8 
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						M   
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						$ 
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						 550.3 
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						M 
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						Volatility 
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						 40 
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						%   
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						N/A 
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						Term 
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						 0.08 
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						 0.33 
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						Risk-free rate 
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						 0.10 
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						%   
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						 0.09 
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						% 
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						Dividend yield 
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						 0.00 
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						%   
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						 0.00 
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						% 
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			(*) M is defined as million.
		 
   
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| Schedule of fair value of warrant liabilities | 
 
		
			
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						Fair value as of January 1, 2020 
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						$ 
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						  — 
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				| 
					 
						Initial measurement on October 12, 2020 
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						 45,045,478 
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				| 
					 
						Change in valuation inputs and other assumptions 
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				 | 
				
					 
						  
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						 5,432,712 
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				| 
					 
						Fair value as of December 31, 2020 
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				 | 
				
					 
						$ 
				 | 
				
					 
						 50,481,190 
				 | 
			 
		  
		
			 
		 
   
 | 
| Conversion Option Liabilities | 
 
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| FAIR VALUE MEASUREMENTS | 
 
 | 
| Schedule of fair value of warrant liabilities | 
 
		
			
				| 
					 
						  
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				| 
					 
						Fair value as of January 1, 2020 
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						$ 
				 | 
				
					 
						  — 
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				| 
					 
						Initial measurement on November 2, 2020 
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						 1,493,877 
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				| 
					 
						Change in valuation inputs and other assumptions 
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				 | 
				
					 
						  
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						 110,482 
				 | 
			 
			
				| 
					 
						Fair value as of December 31, 2020 
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				 | 
				
					 
						$ 
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						 1,604,359 
				 | 
			 
		  
		
			 
		 
   
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| Black-Scholes Valuation | Private Placement Warrants | 
 
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| FAIR VALUE MEASUREMENTS | 
 
 | 
| Schedule of quantitative information regarding Level 3 fair value measurements inputs | 
 
		
			
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						As of December 31, 
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				 | 
				
					 
						As of December 31, 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						     
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						 2019 
				 | 
				
					 
						     
				 | 
				
					 
						 2020 
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				 | 
			 
			
				| 
					 
						Exercise price 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 11.50 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
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						 11.50 
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				 | 
			 
			
				| 
					 
						Stock price 
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						$ 
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						 10.44 
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						$ 
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						 10.35 
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				| 
					 
						Volatility 
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				 | 
				
					 
						  
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						 20.00 
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						%   
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						 30.0 
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						% 
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				| 
					 
						Probability of completing a Business Combination 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 80.0 
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						%   
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						 85 
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						% 
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				| 
					 
						Term 
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						 5.33 
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						 5.11 
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						Risk-free rate 
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				 | 
				
					 
						  
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						 1.74 
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						%   
				 | 
				
					 
						  
				 | 
				
					 
						 0.38 
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						% 
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				| 
					 
						Dividend yield 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 0.0 
				 | 
				
					 
						%   
				 | 
				
					 
						  
				 | 
				
					 
						 0.0 
				 | 
				
					 
						% 
				 | 
			 
		  
		
			 
		 
   
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| Black-Scholes Valuation | Conversion Option Liabilities | 
 
 | 
| FAIR VALUE MEASUREMENTS | 
 
 | 
| Schedule of quantitative information regarding Level 3 fair value measurements inputs | 
 
		
			 
		 
		
			
				| 
					 
						  
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				 | 
				
					 
						  
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						As of November 2, 
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						As of December 31, 
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				| 
					 
						  
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						2020 
				 | 
				
					 
						     
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						2020 
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				 | 
			 
			
				| 
					 
						Exercise price 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 1.00 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
					 
						 1.00 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Underlying warrant value 
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				 | 
				
					 
						$ 
				 | 
				
					 
						 1.92 
				 | 
				
					 
						* 
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						$ 
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						 2.06 
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						* 
				 | 
			 
			
				| 
					 
						Volatility 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 125.0 
				 | 
				
					 
						%   
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						 110.0 
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						% 
				 | 
			 
			
				| 
					 
						Number of Class A Shares 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						*1.5 
				 | 
				
					 
						M 
				 | 
				
					 
						  
				 | 
				
					 
						 1.5 
				 | 
				
					 
						M 
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				| 
					 
						Term 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 0.28 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 0.11 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Risk-free rate 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 0.09 
				 | 
				
					 
						%   
				 | 
				
					 
						  
				 | 
				
					 
						 0.08 
				 | 
				
					 
						% 
				 | 
			 
			
				| 
					 
						Dividend yield 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 0.0 
				 | 
				
					 
						%   
				 | 
				
					 
						  
				 | 
				
					 
						 0.0 
				 | 
				
					 
						% 
				 | 
			 
		  
		 
		
			(*) M is defined as million.
		 
   
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