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Leases - Additional Information (Detail) - USD ($) $ in Thousands | 4 Months Ended | 12 Months Ended
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Apr. 20, 2019 | Dec. 29, 2018
Lessee Lease Description [Line Items] |  |
Lessee, operating lease, existence of residual value guarantees | false |
Lessee, operating lease, residual value guarantees, description | Additionally, these contracts do not contain residual value guarantees, and there are no other restrictions or covenants in the contracts. |
Short-term lease expense | $ 814 |
Increase in lease assets and liabilities, net | $ 1,300 |
Lease arrangements expiration period |  | 18 years
Minimum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 1 year |
Lessee, operating lease renewal term | 1 month |
Lease term |  | 2 years
Operating lease period |  | 1 month
Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 26 years |
Lessee, operating lease renewal term | 10 years |
Lease term |  | 26 years
Operating lease period |  | 10 years
Bakery Equipment |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | less than a year up to eight years |
Bakery Equipment | Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 8 years |
Transportation Equipment |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | less than one year up to seven years |
Transportation Equipment | Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 7 years |
IT Equipment |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | less than a year up to five years |
IT Equipment | Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 5 years |
Certain Equipment and IT Equipment | Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | shorter than a year |
Buildings and Land |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease, existence of residual value guarantees | false |
Lessee, operating lease, residual value guarantees, description | Additionally, these contracts do not contain residual value guarantees, and there are no other restrictions or covenants in the contracts. |
Short Term Leases |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease, existence of residual value guarantees | false |
Lessee, operating lease, residual value guarantees, description | do not contain residual value guarantees, and there are no other restrictions or covenants in the leases. |
Lessee, operating lease, purchase options | false |
Lessee, operaing lease, option to extend, description | There are no purchase options present, however, there generally are renewals that could extend lease terms for additional periods. |
Short Term Leases | Minimum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 1 month |
Short Term Leases | Maximum |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 12 months |

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- Definition Increase decrease in lease assets liabilities net. + References No definition available. + Details
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- Definition Lessee, operating lease, existence of option to purchase. + References No definition available. + Details
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- Definition Indicates (true false) whether lessee provided residual value guarantee for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Description of terms and conditions of residual value guarantee provided by lessee on operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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