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Other Retirement Plans (Details) - USD ($) | 12 Months Ended
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Sep. 25, 2016 | Sep. 27, 2015 | Sep. 28, 2014
Other Retirement Plans [Line Items] |  |  |
Pension Contributions | $ 4,604,000 | $ 3,577,000 | $ 1,435,000
Cost Related to Other Retirement Plans | 4,616,000 | 4,125,000 | 3,963,000
GCIU- Employer Retirement Fund [Member] | Multiemployer Plans, Pension [Member] |  |  |
Other Retirement Plans [Line Items] |  |  |
Pension Contributions | 138,000 | 145,000 | 265,000
CWA/ITU Negotiated Pension Plan [Member] | Multiemployer Plans, Pension [Member] |  |  |
Other Retirement Plans [Line Items] |  |  |
Pension Contributions | 108,000 | 122,000 | 133,000
District No. 9 Pension Trust [Member] | Multiemployer Plans, Pension [Member] |  |  |
Other Retirement Plans [Line Items] |  |  |
Pension Contributions | $ 31,000 | $ 34,000 | $ 37,000

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- Definition Cost Related to Other Retirement Plans- amounts recognized as expense during the year related to other retirement plans including defined contribution plans, deferred compensation arrangements, among others. + References No definition available. + Details
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- Definition [Line Items] for Other Retirement Plans [Table] + References No definition available. + Details
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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585 + Details
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- Details
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- Details
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- Details
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- Details
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