Quarterly report pursuant to Section 13 or 15(d)

Summary of Restricted Stock Activity (Detail)

v3.20.2
Summary of Restricted Stock Activity (Detail) - Restricted Stock
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Shares of Restricted Stock  
Shares of Restricted Stock, Beginning balance | shares 783,823
Shares of Restricted Stock, Granted | shares 1,045,885
Shares of Restricted Stock, Vested | shares (326,281)
Shares of Restricted Stock, Forfeited | shares (56,133)
Shares of Restricted Stock, Ending balance | shares 1,447,294
Shares of Restricted Stock, Unvested restricted stock | shares 1,447,294
Weighted Average Grant Date Fair Value  
Weighted Average Grant Date Fair Value Outstanding, Beginning | $ / shares $ 37.53
Weighted Average Grant Date Fair Value, Granted | $ / shares 18.35
Weighted Average Grant Date Fair Value, Vested | $ / shares 35.63
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 33.63
Weighted Average Grant Date Fair Value Outstanding, Ending | $ / shares 24.25
Weighted Average Grant Date Fair Value, Unvested restricted stock | $ / shares $ 24.25