Discount on purchase price percentage of fair market value.

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Exercise or strike price of fair market value of underlying common stock on date of grant reacquired or withheld.

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Percentile rank of shareholder return of stock.

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Share based compensation arrangement by share based payment award equity instruments other than options in period grant date fair value outstanding.

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Share based compensation arrangement by share based payment award number of shares available for grant increased by shares.

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Share based compensation arrangement by share based payment award target percentage.

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Share based compensation arrangement by share based payment award vesting date.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for 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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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Price of a single share of a number of saleable stocks of a company.

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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Stock Award Plans - Additional Information (Detail) - USD ($)		12 Months Ended
	Jul. 01, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 31, 2023	May 31, 2020	May 16, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plan, number of shares available for grant increased by shares					3,000,000
Stock-based compensation		$ 17,649,000	$ 13,447,000	$ 12,200,000
Options issued or granted		0	0
Fair value of stock options vested		$ 2,800,000	$ 3,200,000	2,300,000
Total intrinsic value of options exercised		1,300,000	2,400,000	1,700,000
Cash received from the exercise of options		1,200,000	3,000,000.0	1,000,000.0
Total fair value of restricted stock units vested		20,600,000	4,400,000	6,700,000
Total grant date fair value of restricted stock units outstanding		57,000,000	43,200,000	19,300,000
Issuance of common stock under employee stock purchase plan		1,668,000	2,082,000	1,090,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock under employee stock purchase plan		$ 5,000	$ 6,000	$ 5,000
Issuance of common stock under employee stock purchase plan (in shares)		507,000	686,000	527,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance		2,900,000
Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock under employee stock purchase plan		$ 25,000
Issuance of common stock under employee stock purchase plan (in shares)		5,000
Employee \| ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount on purchase price percentage of fair market value		85.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		10 years
Unrecognized compensation expense, weighted average period for recognition		2 years 1 month 9 days	2 years 2 months 19 days
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Unrecognized compensation expense, weighted average period for recognition		2 months 26 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		36 months
Vesting rights percentage		25.00%
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Restricted Stock \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights percentage		25.00%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value per share		$ 9.40
Vesting date		Jul. 15, 2026
Common stock price per share	$ 4.55
Risk-free interest rate	4.19%
Volatility	74.00%
Dividend yield	0.00%
Unrecognized compensation expense related to non-option		$ 16,400,000
RSUs \| Less than 25th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentile		25.00%
Percent of target		0.00%
RSUs \| 25th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentile		25.00%
Percent of target		50.00%
RSUs \| 50th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentile		50.00%
Percent of target		100.00%
RSUs \| 75th Percentile
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentile		75.00%
Percent of target		200.00%
RSUs \| 90th Percentile or Higher
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentile		90.00%
RSUs \| Maximum \| 90th Percentile or Higher
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of target		300.00%
RSUs and Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation		$ 17,000,000	$ 12,800,000	$ 11,500,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation		600,000	600,000	700,000
Performance-based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost		300,000	100,000	$ 100,000
Unrecognized compensation expense related to options		0	$ 200,000
Options and Performance-based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to options		$ 600,000
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plan, number of shares available for grant increased by shares					25,000,000
Exercise or strike price of fair market value of underlying common stock on date of grant reacquired or withheld						100.00%
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plan, shares							0