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Equity Plans and Stock-Based Compensation - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	May 31, 2024	Jun. 30, 2021	Jan. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increase in aggregate number of shares of common stock authorized for issuance			11,400,000
Options vesting period	3 years
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period	7 years
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units awards outstanding (in shares)	5,861,000	5,363,000
Performance Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units awards outstanding (in shares)	1,439,000	1,115,000
Maximum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period	10 years
Minimum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period	7 years
2018 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Newly reserved shares of common stock	8,321,893			3,250,000	1,500,000
Performance Based Vesting Schedule | Performance Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units awards outstanding (in shares)	36,000
2018 Equity Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued to employees			41,440,250

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