Equity Plans and Stock-Based Compensation - Fair Value-Based Measurements and Weighted-Average Assumptions (Detail) - $ / shares	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value	$ 7.32	$ 7.95	$ 7.17
Risk-free interest rate	4.00%	2.00%	0.70%
Expected life (in years)	4 years 6 months	4 years 6 months	4 years 6 months
Expected Volatility	0.80%	0.80%	0.90%
Market Based Performance Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value	$ 18.25	$ 11.62	$ 8.4
Risk-free interest rate	4.30%	1.70%
Expected life (in years)	2 years 10 months 24 days	2 years 10 months 24 days	2 years 10 months 24 days
Expected Volatility	0.90%	0.90%	0.90%
Market Based Performance Stock Unit \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate			0.03%
Market Based Performance Stock Unit \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate			1.92%
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value	$ 5.35	$ 7.37	$ 6.48
Risk-free interest rate	4.90%	2.10%	0.10%
Expected life (in years)	1 year 3 months 18 days	1 year 3 months 18 days	1 year 2 months 12 days
Expected Volatility	0.70%	1.00%	1.00%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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