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Warrant liabilities - Additional Information (Detail) - $ / shares
shares in Millions
12 Months Ended
Dec. 01, 2021
Dec. 31, 2021
Disclosure of Warrant Liabilities [Line Items]    
Description of terms of warrants   The terms of all warrants include a provision that in the event of a tender or exchange offer made to and accepted by holders of more than 50% of the outstanding GHL Class A ordinary shares, the warrant holders would be entitled to receive cash for their warrants.
Warrants [Member]    
Disclosure of Warrant Liabilities [Line Items]    
Number of warrants issued in reverse recapitalization 26  
Warrant exercise price   $ 11.50
Warrants [Member] | Bottom of range [member]    
Disclosure of Warrant Liabilities [Line Items]    
Warrants redemption price per share   0.01
Warrants [Member] | Top of range [member]    
Disclosure of Warrant Liabilities [Line Items]    
Warrants redemption price per share   $ 0.10
Public Warrants [Member]    
Disclosure of Warrant Liabilities [Line Items]    
Number of shares listed in NASDAQ   10
Private Warrant [Member]    
Disclosure of Warrant Liabilities [Line Items]    
Number of shares listed in NASDAQ   16
Number of warrants can be exercised on cash less basis   12