Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Summary of Fair Values of Stock Options Granted (Detail)

v3.22.2.2
Stock Based Compensation - Summary of Fair Values of Stock Options Granted (Detail) - Employee Stock Option [Member] - $ / shares
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock price $ 1.27  
Dividend yield 0.00%  
Expected volatility 108.00%  
Risk-free interest rate 1.92%  
Expected life 5 years 7 months 6 days  
Employee Stock Purchase Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock price $ 1.25 $ 1.80
Dividend yield 0.00% 0.00%
Expected volatility 61.00% 95.00%
Risk-free interest rate 0.19% 0.09%
Expected life 6 months 6 months