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Employee Benefit Plans - Total Contributions Made to Multiemployer Pension Plans (Details) - Pension Benefits [Member] - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2017 | Sep. 24, 2016 | Sep. 26, 2015
Multiemployer Plans [Line Items] |  |  |  |
Contributions |  | $ 467 | $ 748 | $ 1,073
Local 282 Pension Trust [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Pension Fund | [1] | Local 282 Pension Trust |  |
EIN/Pension Plan Number | [1] | 116245313 |  |
PPA Zone Status | [1] | Green | Green |
FIP/RP Status | [1] | NA |  |
Contributions | [1] | $ 252 | $ 281 | 269
Contributions greater than 5% of Total Plan Contributions | [1] | false |  |
Expiration date of CBA | [1] | Aug. 31, 2019 |  |
Teamsters Industrial Employees Pension Fund [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Pension Fund | [2] | Teamsters Industrial Employees Pension Fund |  |
EIN/Pension Plan Number | [2] | 226099363 |  |
PPA Zone Status | [2] | Green | Green |
FIP/RP Status | [2] | NA |  |
Contributions | [2] | $ 190 | $ 207 | 200
Contributions greater than 5% of Total Plan Contributions | [2] | false |  |
Expiration date of CBA | [2] | Mar. 31, 2021 |  |
Other [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Pension Fund | [3] | Other |  |
Contributions | [3] | $ 25 | $ 260 | $ 604
Contributions greater than 5% of Total Plan Contributions | [3] | false |  |
[1] | Based on most recent available valuation information for plan year ended February 2016.
[2] | Based on most recent available valuation information for plan year ended December 2015.
[3] | Includes the MEPPs from which the Partnership withdrew.

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- Definition Amount of contributions made to multiemployer plan by employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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- Definition Indicate the multiemployer plan's certified zone status as currently required by the Pension Protection Act of 2006 or a subsequent amendment thereof. The zone status categories are red (critical status), orange (seriously endangered), yellow (endangered), and green (none of the above). The acceptable values are "red", "orange", "yellow", "green", "other", and "NA". 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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- Definition Expiration date of the collective bargaining arrangement requiring contributions to the multiemployer plan, in CCYY-MM-DD format. 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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- Definition Indicate whether a funding improvement plan or rehabilitation plan has been implemented or is pending for 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. The acceptable values are "no", "pending", "implemented", "other", and "NA". + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI http://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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450655-114947 + Details
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