Deferred Compensation Plan,Asset, Fair Value Disclosure

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- Definition

Deferred Compensation Plan, Liability, Fair Value Disclosure

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- Definition

Defined Benefit Plan, Percentage of Participants Contributions Vested

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- Definition

Defined Contribution Plan, Employer Matching Contribution, Employee Deferred Compensation Percent For Match

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- Definition

Defined Contribution Plan, Required Employee Age

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- Definition

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

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

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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No definition available.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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- Definition

Discount rate from fair value on offering date that participants pay for shares.

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

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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- Definition

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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- Definition

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

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

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

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- Definition

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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- Definition

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

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Employee Benefit Plans (Details) - USD ($)	12 Months Ended			90 Months Ended
Employee Benefit Plans (Details) - USD ($)	Dec. 29, 2020	Dec. 31, 2019	Jan. 01, 2019	Dec. 29, 2020
Employee Benefit Plans [Line Items]
Required employee age	21 years
Percentage of participants contributions vested	100.00%
Employer matching contribution	25.00%
Participant deferred compensation percentage for match	4.00%
Matching contribution expense	$ 100,000	$ 400,000	$ 0
ESPP
Employee Benefit Plans [Line Items]
Maximum employee salary percentage	15.00%			15.00%
Offering date percentage	85.00%
Purchase date percentage	85.00%
Number of shares available for issuance	750,000			750,000
Shares issued under ESPP	29,856			204,319
Shares remaining for future issuance	545,681			545,681
Risk-free interest rate	0.14%
Expected term (average in years)	3 months
Expected volatility	80.40%
Expected dividend yield	0.00%
Weighted-average fair value per share at grant date (USD per share)	$ 1.16
Compensation expense	$ 40,000
Other assets
Employee Benefit Plans [Line Items]
Deferred compensation plan asset	2,200,000	2,000,000.0		$ 2,200,000
Accrued expenses and other current liabilities
Employee Benefit Plans [Line Items]
Deferred compensation plan liability	$ 300,000	$ 600,000		$ 300,000