Post-effective amendment to a registration statement that is not immediately effective upon filing

Basic and Diluted Net Loss Per Share - Additional Information (Detail)

v3.21.2
Basic and Diluted Net Loss Per Share - Additional Information (Detail) - Options For Purchase Of Ordinary Shares [Member] - shares
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 14,411,231 9,306,970 14,411,231 9,306,970 8,470,758 7,834,282 6,998,647
Public Warrants [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 7,499,991   7,499,991        
private Warrants [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 8,731,250   8,731,250        
Series A Convertible Preferred Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 20,418,209 20,418,209 20,418,209 20,418,209 20,418,209 20,418,209 20,418,209
Series B Convertible Preferred Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 15,906,053 15,906,053 15,906,053 15,906,053 15,906,053 15,906,053 15,906,053
Series B-1 Convertible Preferred Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 3,032,940 3,032,940 3,032,940 3,032,940 3,032,940 3,032,940 3,032,940
Series C Convertible Preferred Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 28,216,005 28,216,005 28,216,005 28,216,005 28,216,005 28,216,005  
Series C-1 Convertible Preferred Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 3,045,792   3,045,792   2,699,114    
Unvested Restricted Shares [Member]              
Earnings Per Share [Line Items]              
Anti dilutive securities excluded in calculation of earnings per share 2,789,625   2,789,625