Maximum authorized payroll deduction percentage of eligible compensation for eligible employees.

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- Definition

Payments for relinquishment of right to purchase common stock upon exercise of stock options.

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Percentage of outstanding shares of common stock.

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- Definition

Share-based compensation arrangement by share-based payment award, number of common stock issuable per RSU vested.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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- Definition

The cash outflow to reacquire common stock during the period.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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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Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-based Compensation - Additional Information (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 30, 2021	Mar. 03, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 28, 2022	Jan. 31, 2022	Jan. 01, 2022	Oct. 31, 2020	Sep. 30, 2020	Dec. 28, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares authorized			150,000,000	150,000,000					150,000,000
Payments for repurchase of common stock		$ 100		$ 194	$ 30
Payments for relinquishment of right to purchase common stock upon exercise of stock options		$ 700
Stock-based compensation, common stock shares outstanding			48,688,875	43,059,632
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, options vesting description			Vesting of the RSUs are contingent upon the determination of achievement of certain discovery and clinical milestones, or as specified market conditions are met.
Share-based compensation, number of common stock issuable per RSU vested			1
Subsequent Event \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, shares authorized for issuance						563,500	563,500
2015 Incentive Stock Option and Grant Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares reserved for issuance			9,704,418								2,525,327
Stock-based compensation, options vesting description			Options granted under the 2015 Plan generally vest over a period of five or eight years with a cliff vesting at one year and quarterly vesting thereafter and options that lapse or are forfeited are available to be granted again.
Contractual life of options from the date of grant			10 years
Stock-based compensation, common stock shares available for issuance			3,720,993
2015 Incentive Stock Option and Grant Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, options vesting period			5 years
2015 Incentive Stock Option and Grant Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, options vesting period			8 years
2020 Stock Option and Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares reserved for issuance			9,704,418							6,567,144
Stock-based compensation, common stock shares available for issuance			3,720,993
Percentage of outstanding shares of common stock	5.00%
Unrecognized compensation costs			$ 74,500
Expected to be recognized over a weighted average period			2 years 10 months 24 days
2020 Stock Option and Incentive Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares authorized								2,434,443
2020 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares reserved for issuance			861,765
Percentage of outstanding shares of common stock	1.00%
Maximum authorized payroll deduction percentage of eligible compensation for eligible employees			15.00%
Shares issued under employee stock purchase plan			6,640
Stock-based compensation, common stock shares outstanding	656,714
2020 Employee Stock Purchase Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, common stock shares authorized								486,888