Annual report pursuant to Section 13 and 15(d)

Stock Plans - Schedule of Restricted Stock Unit Activity (Detail)

v3.20.4
Stock Plans - Schedule of Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member]
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares, Unvested, Beginning Balance | shares 142,145
Shares, Granted | shares 914,157
Shares, Forfeited | shares (26,250)
Shares, Vested | shares (200,928)
Shares, Unvested, Ending Balance | shares 829,124
Weighted Average Grant Date Fair Value, Unvested, Beginning Balance | $ / shares $ 6.71
Weighted Average Grant Date Fair Value, Granted | $ / shares 10.94
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 8.44
Weighted Average Grant Date Fair Value, Vested | $ / shares 5.85
Weighted Average Grant Date Fair Value, Unvested, Ending Balance | $ / shares $ 11.53