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

Subsequent Events - Additional Information (Detail)

v3.21.2
Subsequent Events - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 05, 2021
USD ($)
$ / shares
shares
Feb. 17, 2021
USD ($)
$ / shares
shares
Oct. 01, 2020
USD ($)
shares
Jun. 30, 2021
shares
Jun. 30, 2021
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Mar. 31, 2021
shares
Jun. 30, 2020
shares
Mar. 31, 2020
shares
Dec. 31, 2018
shares
Dec. 31, 2017
shares
Subsequent Event [Line Items]                        
Reverse stock split ratio   1.138974                    
Share price | $ / shares   $ 10                    
Proceeds from Issuance of convertible preferred shares, net of issuance expenses | $           $ 8,934 $ 161,233          
Series A Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding       0 0 20,418,209 20,418,209          
Series B Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding       0 0 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]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding       0 0 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]                        
Subsequent Event [Line Items]                        
Temporary equity shares issued durng the period new issues             28,216,005          
Temporary equity shares outstanding       0 0 28,216,005 28,216,005 28,216,005 28,216,005 28,216,005 0 0
Series C-1 Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares issued durng the period new issues     943,148 346,678 346,678 2,699,114            
Proceeds from Issuance of convertible preferred shares, net of issuance expenses | $     $ 8,934                  
Temporary equity shares outstanding       0 0 2,699,114 0 2,699,114 0 0 0 0
Stock shares issued during the period shares           346,678            
Subsequent Event [Member]                        
Subsequent Event [Line Items]                        
Reverse stock split ratio   1.138974                    
Share price | $ / shares   $ 10                    
Conversion of temporary equity into permanent equity shares 70,618,999                      
Common stock share exchange ratio 1                      
Class of warrants or rights forfeited during the period shares 187,500                      
Conversion of temporary equity into permanent equity exchange ratio 1                      
Redemption of aggregate consummation of business combination 891,046                      
Subsequent Event [Member] | Perception [Member]                        
Subsequent Event [Line Items]                        
Class of warrants or issued during the period shares 3,027,747                      
Subsequent Event [Member] | Perception [Member] | Upon Achievement Of Earnout Milestone [Member]                        
Subsequent Event [Line Items]                        
Common stock shares subscribed but not issued 2,175,000                      
Subsequent Event [Member] | Antara [Member]                        
Subsequent Event [Line Items]                        
Class of warrants or issued during the period shares 3,784,753                      
Stock shares issued during the period shares 3,002,674                      
Subsequent Event [Member] | Antara [Member] | Upon Achievement Of Earnout Milestone [Member]                        
Subsequent Event [Line Items]                        
Common stock shares subscribed but not issued 312,297                      
Subsequent Event [Member] | Companies Management [Member]                        
Subsequent Event [Line Items]                        
Class of warrants or rights issued but not subscribed 3,500,000                      
Common stock shares subscribed but not issued 2,500,000                      
Subsequent Event [Member] | Certain Members Of The Management [Member] | Upon Achievement Of Earnout Milestone [Member]                        
Subsequent Event [Line Items]                        
Common stock shares subscribed but not issued 1,250,000                      
Subsequent Event [Member] | Accredited Investors [Member] | Subscription Agreement [Member]                        
Subsequent Event [Line Items]                        
Proceeds from issuance of common stock | $ $ 230,000                      
Sale of stock issue price per share | $ / shares $ 10                      
Subsequent Event [Member] | Sponsor [Member]                        
Subsequent Event [Line Items]                        
Class of warrants or rights issued upon conversion of convertible notes 100,000                      
Subsequent Event [Member] | Series A Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding 20,418,209                      
Subsequent Event [Member] | Series B Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding 15,906,053                      
Subsequent Event [Member] | Series B-1 Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding 3,032,940                      
Subsequent Event [Member] | Series C Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares outstanding 28,216,005                      
Subsequent Event [Member] | Series C-1 Convertible Preferred Shares [Member]                        
Subsequent Event [Line Items]                        
Temporary equity shares issued durng the period new issues   375,107                    
Proceeds from Issuance of convertible preferred shares, net of issuance expenses | $   $ 0                    
Temporary equity shares outstanding 3,045,792                      
Subsequent Event [Member] | Common Class B [Member]                        
Subsequent Event [Line Items]                        
Share forfeited during the period shares 1,875,000