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Employee Benefit Plans - Total Contributions Made to Multiemployer Pension Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 24, 2022 | Sep. 25, 2021 | Sep. 26, 2020
Multiemployer Plans [Line Items] |  |  |  |
EIN/Pension Plan Number |  | 22-3410353 |  |
Pension Benefits [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Contributions |  | $ 314 | $ 294 | $ 296
Pension Benefits [Member] | Local 282 Pension Trust [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Pension Fund | [1] | Local 282 Pension Trust (1) |  |
EIN/Pension Plan Number | [1] | 11-6245313 |  |
PPA Zone Status | [1] | Green | Green |
Contributions | [1] | $ 295 | $ 277 | 272
Contributions greater than 5% of Total Plan Contributions | [1] | false |  |
Expiration date of CBA |  | Aug. 31, 2024 |  |
Pension Benefits [Member] | Western Conference of Teamsters Pension Plan [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Pension Fund | [2] | Western Conference of Teamsters Pension Plan (2) |  |
EIN/Pension Plan Number | [2] | 91-6145047 |  |
PPA Zone Status | [2] | Green | Green |
FIP/RP Status |  | NA |  |
Contributions | [2] | $ 19 | $ 17 | $ 24
Contributions greater than 5% of Total Plan Contributions | [2] | false |  |
Expiration date of CBA |  | Feb. 29, 2024 |  |
[1] | Based on most recent available valuation information for plan year ended February 2022.
[2] | Based on most recent available valuation information for plan year ended December 2021.

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- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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- Definition Indicates certified zone status of multiemployer pension plan determined to be individually significant. Acceptable values are "Green", "Yellow", "Orange", "Red", "Other", and "NA". + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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- Definition Indicates (true false) whether, in plan's most recently available annual report, employer contribution exceeds 5 percent of total contribution from all participating employers to multiemployer pension plan determined to be individually significant. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(2) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 + Details
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- Definition Indicates whether funding improvement plan or rehabilitation plan was implemented or pending for multiemployer pension plan, determined to be individually significant. Acceptable values are "No", "Pending", "Implemented", "Other", and "NA". + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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- Definition Description of the general nature of multiemployer plans and of the employer's participation in those plans that would indicate how the risks of participating in these plans are different from single-employer plans. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450655-114947 + Details
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