Quarterly report pursuant to Section 13 or 15(d)

Summary of Unvested Stock Option Activity (Detail)

v3.22.2
Summary of Unvested Stock Option Activity (Detail) - $ / shares
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Granted $ 1.07
Stock Options        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Beginning Balance     5,000  
Granted     0  
Vested     (1,000)  
Forfeited or cancelled     (1,000)  
Ending Balance 3,000   3,000  
Beginning Balance     $ 17.31  
Granted     0  
Vested     23.91  
Forfeited or cancelled     17.03  
Ending Balance $ 15.22   $ 15.22