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Shareholders' Equity - Additional Information (Detail) - USD ($)
Sep. 26, 2021
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Preference shares, authorized 5,000,000   5,000,000 5,000,000
Preferred stock, par value $ 0.0001   $ 0.0001 $ 0.0001
Preferred Stock, Shares Issued 0   0 0
Preference shares, outstanding 0   0 0
Common stock, shares authorized 550,000,000   550,000,000 550,000,000
Common stock, par value (in Dollars per share) $ 0.0001   $ 0.0001 $ 0.0001
Common Stock Shares Issued 115,805,639   115,805,639  
Common Stock Shares Outstanding 67,673,884   67,673,884 67,673,884
Empower Ltd [Member]        
Preference shares, authorized   5,000,000 5,000,000  
Preferred stock, par value   $ 0.0001 $ 0.0001  
Preferred Stock, Shares Issued   0 0  
Preference shares, outstanding   0 0  
Common Stock Shares Issued     67,673,884 67,673,884
Class A Ordinary shares [Member] | Empower Ltd [Member]        
Common stock, shares authorized   500,000,000 500,000,000  
Common stock, par value (in Dollars per share)   $ 0.0001 $ 0.0001  
Common Stock Shares Issued   0 25,000,000  
Common Stock Shares Outstanding   0 25,000,000  
Ordinary shares subject to possible redemption (in Dollars)   $ 25,000,000    
Class B ordinary shares [Member] | Empower Ltd [Member]        
Common stock, shares authorized   50,000,000 50,000,000  
Common stock, par value (in Dollars per share)   $ 0.0001 $ 0.0001  
Common Stock Shares Issued   6,250,000 6,250,000  
Common Stock Shares Outstanding   6,250,000 6,250,000  
Founder shares converted basis percentage   20.00% 20.00%