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

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Amount of noncash expense for share-based payment arrangement.

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The number of grants made 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).

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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Number of non-vested options outstanding.

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Number of options vested.

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Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2022	Jun. 30, 2021	Jun. 29, 2022	Jun. 30, 2021	Dec. 29, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	1,183,873		1,183,873		978,078
Common stock, options vested (shares)			628,053
Common stock, options unvested (shares)	555,820		555,820
Options to purchase common stock granted (shares)			372,958
Aggregate intrinsic value of options outstanding	$ 873		$ 873
Expected volatility			43.00%	46.90%
Risk-free interest rate			2.90%	1.10%
Expected term (years)			6 years 3 months	6 years 3 months
Unrecognized compensation expense, recognition period			3 years 4 months 20 days
Granted (shares)			298,638
Stock-based compensation expense	1,000	$ 1,000	$ 1,796	$ 1,894
Unrecognized compensation expense	$ 2,700		$ 2,700
Premium Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	203,569		203,569
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 6,600		$ 6,600
Unrecognized compensation expense, recognition period			2 years 9 months 29 days