Stock Plans (Summary of Stock Option Activity) (Details) shares in Thousands	12 Months Ended
Jan. 02, 2022 $ / shares shares
Stock option activity
Shares outstanding at beginning of the year	961
Shares granted	625
Shares exercised	(359)
Shares forfeited	(35)
Shares outstanding at end of year	1,192
Shares exercisable at end of year	383
Number of shares vested and expected to vest in the future	1,200
Weighted-average price, outstanding at beginning of year (per share) \| $ / shares	$ 74.40
Weighted-average price, granted (per share) \| $ / shares	159.65
Weighted-average price, exercised (per share) \| $ / shares	70.44
Weighted-average price, forfeited (per share) \| $ / shares	107.70
Weighted-average price, outstanding at end of year (per share) \| $ / shares	119.33
Weighted-average price, exercisable at end of year (per share) \| $ / shares	$ 70.27

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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