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Stock-Based Compensation (Time-Based Restricted Stock Units) - Additional Information (Detail) - Time-Based Restricted Stock Units - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |  | 4 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 23, 2019 | Apr. 18, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted shares issued |  | 219 |  |
Omnibus Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting date |  | --01-05 |  |
Vesting period |  | 3 years | 3 years | 3 years
Restricted shares issued | 43 |  | 219 | 244
Fair Value per Share | $ 23.08 |  | $ 21.74 | $ 18.29
Omnibus Plan | Chief Executive Officer |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock granted | $ 1.0 |  |  |
Restricted shares issued | 43,330 |  |  |
Fair Value per Share | $ 23.08 |  |  |
Vesting term |  | This award will vest 100% on the fourth anniversary of the date of grant provided the CEO remains employed by the company during this period. Vesting will also occur in the event of the CEO’s death or disability, but not his retirement if prior to the fourth anniversary of the grant date. |  |

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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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). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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