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Share-Based Payments - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares Under Options, Outstanding, Beginning balance	13,052
Shares Under Options, Exercised	(13,052)
Shares Under Options, Outstanding, Ending balance		13,052
Weighted Average Exercise Price, Options outstanding, Beginning balance	$ 13.87
Weighted Average Exercise Price, Exercised	$ 13.87
Weighted Average Exercise Price, Options outstanding, Ending balance		$ 13.87
Weighted Average Remaining Contractual Life Years, Options outstanding		4 months 13 days
Aggregate Intrinsic Value, Options outstanding, Beginning balance	$ 39
Aggregate Intrinsic Value, Exercised	$ 51
Aggregate Intrinsic Value, Options outstanding, Ending balance		$ 39

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

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

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