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Time-Based Restricted Stock Units (Detail) - Time-Based Restricted Stock Units - $ / shares shares in Thousands		12 Months Ended
	May 23, 2019	Dec. 28, 2019	Dec. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		288
Fair value per share		$ 19.01
Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	43		244
Vesting date	May 23, 2023
Vesting period		3 years	3 years
Vesting date		--01-05
Fair value per share	$ 23.08		$ 18.29

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- Definition

Share based compensation arrangement by share based payment award vesting date.

+ References

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Share based compensation arrangement by share based payment award vesting month day.

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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-Publisher FASB
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-Topic 718
-SubTopic 10
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net number of non-option equity instruments granted to participants.

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