Stockholders' Equity - Fair Value of Options Granted Under Equity Incentive Plan and Shares Subject to Employee Stock Purchase Plan Valuation Assumptions (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	4.27%	5.36%	4.27%	5.36%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Expected life	6 months	6 months	6 months	6 months
Expected volatility	38.00%	39.00%	38.00%	39.00%
Weighted average fair value	$ 2.86	$ 5.46	$ 2.86	$ 5.46
Equity Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.91%		3.91%
Expected dividend yield	0.00%		0.00%
Expected life	4 years 6 months		4 years 6 months
Expected volatility	36.00%		36.00%
Weighted average fair value	$ 3.38		$ 3.38