Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.21.2
Subsequent Events - Additional Information (Detail) - $ / shares
3 Months Ended
Nov. 08, 2021
Oct. 01, 2021
Sep. 15, 2020
Sep. 30, 2021
Subsequent Event [Line Items]        
Number of options granted       435,000
Stock Option [Member]        
Subsequent Event [Line Items]        
Number of options granted     2,715  
Common stock        
Subsequent Event [Line Items]        
Conversion of Series C preferred stock to common stock, shares       1,467,000
Subsequent Event | Stock Option [Member]        
Subsequent Event [Line Items]        
Number of options granted 3,519      
Stock options exercise price $ 0.96      
Stock option exercise period Nov. 08, 2031      
Stock options vesting percentage 25.00%      
Stock options vesting date Nov. 08, 2022      
Stock option commencing date, Description vest in equal installments over the subsequent 36 months commencing on December 8, 2022.      
Stock options expected to vest 754      
Subsequent Event | Stock Option [Member] | Minimum        
Subsequent Event [Line Items]        
Stock options vesting date Dec. 15, 2022      
Subsequent Event | Stock Option [Member] | Maximum        
Subsequent Event [Line Items]        
Stock options vesting date Sep. 15, 2023      
Subsequent Event | Series C-1 Preferred Shares [Member]        
Subsequent Event [Line Items]        
Conversion of Series C preferred stock to common stock, shares   0.65    
Subsequent Event | Series C-1 Preferred Shares [Member] | Common stock        
Subsequent Event [Line Items]        
Conversion of Series C preferred stock to common stock, shares   560