Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock Option Activity (Detail)

v3.21.2
Stock-Based Compensation - Summary of Stock Option Activity (Detail)
9 Months Ended
Sep. 30, 2021
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Options Exercisable, Beginning Balance | shares 2,347,663
Options Exercisable, Ending Balance | shares 2,685,450
Weighted-Average Exercise Price Per Share, Beginning Balance | $ / shares $ 10.15
Weighted-Average Exercise Price Per Share, Ending Balance | $ / shares $ 10.18
Options Outstanding, Beginning Balance | shares 4,621,173
Options Outstanding, Granted | shares 656,959
Options Outstanding, Exercised | shares (61,372)
Options Outstanding, Forfeited or expired | shares (602,892)
Options Outstanding, Ending Balance | shares 4,613,868
Weighted-Average Exercise Price Per Share, Beginning Balance | $ / shares $ 10.30
Weighted-Average Exercise Price Per Share, Granted | $ / shares 5.70
Weighted-Average Exercise Price Per Share, Exercised | $ / shares 3.70
Weighted-Average Exercise Price Per Share, Forfeited or expired | $ / shares 10.84
Weighted-Average Exercise Price Per Share, Ending Balance | $ / shares $ 9.66