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Employee Benefit Plans - Total Contributions Made to Multiemployer Pension Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 24, 2022 | Sep. 25, 2021
Multiemployer Plans [Line Items] |  |  |  |
EIN/Pension Plan Number |  | 22-3410353 |  |
Pension Benefits [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Contributions |  | $ 319 | $ 314 | $ 294
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 |  | Green | Green |
Contributions | [1] | $ 301 | $ 295 | 277
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 | [1] | Western Conference of Teamsters Pension Plan (1) |  |
EIN/Pension Plan Number | [1] | 91-6145047 |  |
PPA Zone Status |  | Green | Green |
FIP/RP Status |  |  | NA |
Contributions | [1] | $ 18 | $ 19 | $ 17
Contributions greater than 5% of Total Plan Contributions | [1] | false |  |
Expiration date of CBA |  | Feb. 29, 2024 |  |
[1] | Based on most recent available valuation information for plan year ended December 2022.

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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 -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480547/715-80-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 35 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480606/715-80-35-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480576/715-80-50-11 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480576/715-80-50-9 + Details
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- Definition Expiration date of collective-bargaining arrangement (CBA) requiring contribution to multiemployer pension plan determined to be individually significant, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480547/715-80-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480576/715-80-50-5 + Details
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