Stock Based Awards - Summary of Stock Options Activity (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Number of Shares
Number of Shares, Beginning balance | shares	2,173,776
Number of Shares, Options granted | shares	511,950
Number of Shares, Options cancelled | shares	(67,131)
Number of Shares, Options exercised | shares	(77,858)
Number of Shares, Ending balance | shares	2,540,737
Number of Shares, Outstanding and expected to vest | shares	2,357,071
Number of Shares, Exercisable | shares	1,581,920
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning balance | $ / shares	$ 9.59
Weighted Average Exercise Price, Options granted | $ / shares	6.10
Weighted Average Exercise Price, Options cancelled | $ / shares	10.40
Weighted Average Exercise Price, Options exercised | $ / shares	3.32
Weighted Average Exercise Price, Ending balance | $ / shares	9.06
Weighted Average Exercise Price, Outstanding and expected to vest | $ / shares	9.23
Weighted Average Exercise Price, Exercisable | $ / shares	$ 10.36
Weighted Average Remaining Contractual Life (in years)
Weighted Average Remaining Contractual Life (in years)	6 years 6 months
Weighted Average Remaining Contractual Life, Outstanding and expected to vest	6 years 3 months 18 days
Weighted Average Remaining Contractual Life, Exercisable	4 years 9 months 18 days
Aggregate Intrinsic Value, Options outstanding | $	$ 7,446
Aggregate Intrinsic Value, Outstanding and expected to vest | $	7,332
Aggregate Intrinsic Value, Exercisable | $	$ 6,833