Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of RSU Activity (Detail)

v3.20.1
Stockholders' Equity - Summary of RSU Activity (Detail) - Unvested RSUs
3 Months Ended
Mar. 31, 2020
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Shares, Unvested as of December 31, 2019 | shares 1,910,764
Shares, Granted | shares 3,387,890
Shares, Forfeited | shares (85,851)
Shares, Vested | shares (552,498)
Shares, Outstanding as of March 31, 2020 | shares 4,660,305
Weighted Average Grant Date Fair Value, Unvested as of December 31, 2019 | $ / shares $ 26.93
Weighted Average Grant Date Fair Value, Granted | $ / shares 12.15
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 18.66
Weighted Average Grant Date Fair Value, Vested | $ / shares 25.04
Weighted Average Grant Date Fair Value, Outstanding as of March 31, 2020 | $ / shares $ 16.56