Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Summary of Restricted Stock Unit Award Activity (Detail)

v3.21.2
Common Stock - Summary of Restricted Stock Unit Award Activity (Detail) - Restricted Stock Unit [Member]
9 Months Ended
Sep. 30, 2021
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of Shares, Beginning Balance | shares 231
Number of Shares, Granted | shares 53,250
Number of Shares, Released | shares (231)
Number of Shares, Ending Balance | shares 53,250
Weighted-Average Grant Date Fair Value, Beginning Balance | $ / shares $ 580.00
Weighted-Average Grant Date Fair Value, Granted | $ / shares 13.09
Weighted-Average Grant Date Fair Value, Released | $ / shares 580.00
Weighted-Average Grant Date Fair Value, Ending Balance | $ / shares $ 13.09