Stock-based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2018 shares	Oct. 15, 2020 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based payment exercise price description	The exercise price for incentive stock options is at least 100% of the fair market value on the date of grant for stockholders owning less than 10% of the voting power of all classes of stock, or at least 110% of the fair market value for stockholders owning more than 10% of the voting power of all classes of stock. Options generally expire in 10 years and vest over periods determined by the Board, generally 48 months.
Share based compensation expense | $	$ 8,452,000	$ 12,652,000
Share based compensation expense recognized tax benefit | $	$ 0	$ 0
Shares of common stock held by employees subject to repurchase	0	0
Less than 10% [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price for incentive stock options as of fair market value	1
More Than 10% [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price for incentive stock options as of fair market value	1.10
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding	627,685	414,898
Expiration period	10 years
Common stock vesting period	48 months
Share based compensation expense | $	$ 7,900,000	$ 11,800,000
Share based payment unrecognized stock based payment expenses | $	$ 5,900,000
Share based payment unrecognized expenses expected vesting peroiod	2 years 7 months 17 days
Share based payments weighted-average grant date fair value | $ / shares	$ 12.88	$ 20.67
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period	3 years
Share based compensation expense | $	$ 73,000	$ 31,000
Share based payment unrecognized stock based payment expenses | $	$ 100,000
Share based payment unrecognized expenses expected vesting peroiod	3 years 3 months 7 days
Restricted stock awards rights vesting percentage	33.00%
Restricted stock awards rights vesting	1/36
Restricted stock awards granted	4,241		20,118
Total fair value of restricted stock award vested | $	$ 100,000	0
2018 Equity incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding	58,023
2018 Equity incentive Plan [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period	4 years
Restricted stock awards rights vesting percentage	25.00%
Restricted stock awards rights vesting	1/48
2020 Incentive Award Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based payment awards granted	778,025
Common stock available for future grant	116,859
2020 Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock available for future grant	72,561			14,756
Share based compensation expense | $	$ 500,000	$ 900,000
2024 Employment Inducement Award Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based payment awards granted	104,000
Common stock available for future grant	496,000
Employees [Member] | 2018 Equity incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options granted	131,086