v3.21.2

STOCK-BASED COMPENSATION - Valuation Assumptions (Details) - $ / shares	9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020
Valuation Assumptions
Weighted-average fair value of options granted during the period	$ 7.33	$ 1.79
Expected life (in years)	5 years 7 months 6 days	5 years 1 month 6 days
Expected dividend	0.00%	0.00%
Expected stock volatility	64.02%	55.02%
Risk-free interest rate	0.90%	0.90%

X

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No definition available.

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

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Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

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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