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Stock Compensation Plans and Stock Based Compensation (Details 8) - Purchase rights granted [Member] - $ / shares	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Weighted-average grant date fair value of purchase rights granted under ESPP and weighted-average assumptions used in model
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	31.50%	32.60%	27.90%
Risk-free interest rate	0.07%	0.80%	2.23%
Expected term (in years)	6 months	6 months	6 months
Weighted average fair value of options granted	$ 33.77	$ 23.08	$ 14.37

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

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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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