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Restructuring Activities - Additional Information (Detail) $ in Thousands |  |  | 3 Months Ended | 4 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 02, 2018 Segment | May 03, 2017 BusinessUnit | Jul. 11, 2020 USD ($) Bakery | Apr. 18, 2020 Bakery | Jul. 11, 2020 USD ($) | Jul. 13, 2019 USD ($)
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Number of closed bakeries reclassified as held for sale | Bakery |  |  | 3 | 2 |  |
Impairment charges assets held for sale |  |  | $ 4,200 |  | $ 9,270 | $ 1,781
Impairment of Trademark |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Impairment charge |  |  | 4,636 |  | $ 4,636 |
Bakeries |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Impairment charges assets held for sale |  |  | 4,600 |  |  |
Develop Leading Capabilities |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Number of operating segments | Segment | 1 |  |  |  |  |
Employee Severance | Voluntary Employee Separation Incentive Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Employee termination benefits |  |  | $ 1,300 |  |  |
Launch of Project Centennial |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring activities, expected completion year |  |  |  |  | 2021 |
Launch of Project Centennial | Develop Leading Capabilities |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Number of new organizational structure business units established | BusinessUnit |  | 2 |  |  |  |

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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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