XML 67 R47.htm IDEA: XBRL DOCUMENT v3.22.1
Ordinary Shares - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Feb. 07, 2018
Class of Stock [Line Items]          
Ordinary shares, shares authorized         500,000,000
Ordinary shares, par or stated value per share         $ 0.0001
Proceeds from Initial Public Offering   $ 135,117,436      
Ordinary shares, Conversion basis Each Class B Ordinary Share is convertible into one Class A Ordinary Share. Class A Ordinary Shares are not convertible into Class B Ordinary Shares under any circumstances.        
Common Stock Shares Outstanding     73,393,941    
Authorized share capital     $ 50,000    
Common Stock [Member]          
Class of Stock [Line Items]          
Ordinary shares, shares authorized         448,763,811
Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred shares, shares authorized         51,236,189
IPO [Member]          
Class of Stock [Line Items]          
Ordinary shares, shares authorized 500,000,000 500,000,000      
Common Class A [Member]          
Class of Stock [Line Items]          
Ordinary shares, shares authorized 400,000,000 400,000,000      
Ordinary shares, par or stated value per share $ 0.0001 $ 0.0001      
Ordinary shares, Voting Rights Ordinary shares,Voting Rights Each Class A Ordinary Share entitles the holder to one vote Each Class A Ordinary Share entitles the holder to one vote      
Common Stock Shares Outstanding 124,843,668        
Common Class A [Member] | Over-Allotment Option [Member]          
Class of Stock [Line Items]          
Issue of shares   700,000      
Common Class A [Member] | IPO [Member]          
Class of Stock [Line Items]          
Issue of shares   18,600,000      
Issue price per share   $ 7.5      
Proceeds from Initial Public Offering   $ 135,117,436      
Common Class B [Member]          
Class of Stock [Line Items]          
Ordinary shares, shares authorized 100,000,000 100,000,000      
Ordinary shares, par or stated value per share $ 0.0001 $ 0.0001      
Ordinary shares, Voting Rights Ordinary shares,Voting Rights each Class B Ordinary Share entitles the holder to twenty votes each Class B Ordinary Share entitles the holder to twenty votes      
Common Stock Shares Outstanding 24,734,013        
Common Class B [Member] | Yoo Yoo Limited [Member]          
Class of Stock [Line Items]          
Number of shares converted into Class B ordinary shares 24,734,013        
Series Angel Redeemable Convertible Preferred Shares [Member]          
Class of Stock [Line Items]          
Convertible Preferred Shares, Outstanding     4,955,327    
Convertible Preferred Shares, Par Value Per Share     $ 0.0001 $ 0.0001  
Series Pre A Redeemable Convertible Preferred Shares [Member]          
Class of Stock [Line Items]          
Convertible Preferred Shares, Outstanding     9,917,226    
Convertible Preferred Shares, Par Value Per Share     $ 0.0001 $ 0.0001  
Series A Redeemable Convertible Preferred Shares [Member]          
Class of Stock [Line Items]          
Convertible Preferred Shares, Outstanding     36,363,636    
Convertible Preferred Shares, Par Value Per Share     $ 0.0001