Stock Incentive Plans - Summary of Options Outstanding Vested and Expected to Vest (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Vested (in shares) | shares	1,017,549
Expected to vest (in shares) | shares	1,488,440
Total (in shares) | shares	2,505,989
Vested (in dollars per share) | $ / shares	$ 8.57
Expected to vest (in dollars per share) | $ / shares	$ 21.52
Vested, weighted average remaining life	6 years 5 months 12 days
Expected to vest, weighted average remaining contractual life	8 years 10 months 20 days
Vested, aggregate intrinsic value | $	$ 13,795
Expected to vest, aggregate intrinsic value | $	6,055
Aggregate Intrinsic Value, Total | $	$ 19,850