Stock-Based Compensation - Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options outstanding beginning balance, Shares Subject to Stock Options | shares	4,088,084
Granted, Shares Subject to Stock Options | shares	1,005,023
Exercised, Shares Subject to Stock Options | shares	0
Forfeited, Shares Subject to Stock Options | shares	(15,000)
Cancelled, Shares Subject to Stock Options | shares	(5,000)
Options outstanding ending balance, Shares Subject to Stock Options | shares	5,073,107
Options exercisable, Shares Subject to Stock Options | shares	2,873,185
Options outstanding beginning balance, Weighted-Average Exercise Price | $ / shares	$ 5.63
Granted, Weighted-Average Exercise Price | $ / shares	4.80
Exercised, Weighted-Average Exercise Price | $ / shares	0
Forfeited, Weighted-Average Exercise Price | $ / shares	6.61
Cancelled, Weighted-Average Exercise Price | $ / shares	6.61
Options outstanding ending balance, Weighted-Average Exercise Price | $ / shares	5.46
Options exercisable, Weighted-Average Exercise Price | $ / shares	$ 5.26
Options outstanding, Weighted-Average Remaining Contractual Term	7 years 4 months 9 days
Options exercisable, Weighted-Average Remaining Contractual Term	6 years 25 days
Options outstanding, Aggregate Intrinsic Value | $	$ 1,373,000
Options exercisable, Aggregate Intrinsic Value | $	$ 1,373,000