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Stockholders' Equity - Summary of Stock Option Activity (Detail)
6 Months Ended
Jun. 30, 2021
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Outstanding Beginning Balance, Number of Shares | shares 3,177,942
Granted, Number of Shares | shares 241,063
Exercised, Number of Shares | shares (113,721)
Canceled/Forfeited, Number of Shares | shares (9,410)
Outstanding Ending Balance, Number of Shares | shares 3,295,874
Outstanding Beginning Balance, Weighted-Average Exercise Price Per Share $ 2.78
Granted, Weighted-Average Exercise Price Per Share 3.85
Exercised, Weighted-Average Exercise Price Per Share 2.59
Cancelled/Forfeited, Weighted-Average Exercise Price Per Share 4.09
Outstanding Ending Balance, Weighted-Average Exercise Price Per Share 2.86
Outstanding, $1.17 - $23.20 [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Exercise Price Per Share, Minimum 1.17
Exercise Price Per Share, Maximum 23.20
Granted, $3.01 - $3.48 [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Exercise Price Per Share, Minimum 3.01
Exercise Price Per Share, Maximum 3.48
Exercised, $1.48 - $3.10 [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Exercise Price Per Share, Minimum 1.48
Exercise Price Per Share, Maximum 3.10
Cancelled/Forfeited, $1.48 - $5.44 [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Exercise Price Per Share, Minimum 1.48
Exercise Price Per Share, Maximum 5.44
Outstanding, $1.17 - $23.20 [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Exercise Price Per Share, Minimum 1.17
Exercise Price Per Share, Maximum $ 23.20