Share-Based Compensation - Summary of SARs Outstanding (Detail) - SARs	6 Months Ended
Jun. 27, 2020 $ / shares shares
SARs, Shares Outstanding
Outstanding at beginning of period (in shares) \| shares	896,923
Granted (in shares) \| shares	64,727
Exercised (in shares) \| shares	(178,625)
Forfeited (in shares) \| shares	(8,954)
Outstanding at end of period (in shares) \| shares	774,071
Weighted-Average Grant Date Exercise Price
Outstanding at beginning of period (usd per share) \| $ / shares	$ 89.05
Granted (usd per share) \| $ / shares	244.97
Exercised (usd per share) \| $ / shares	73.21
Forfeited (usd per share) \| $ / shares	89.57
Outstanding at end of period (usd per share) \| $ / shares	$ 105.70
Exercisable at end of period (in shares) \| shares	533,880
Exercisable at end of period (usd per share) \| $ / shares	$ 77.28

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

No definition available.

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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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- Definition

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

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- Definition

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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- Definition

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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