Income Taxes - Contingency (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Interest and Penalties [Roll Forward]
Balance as of the beginning of the year	$ 22,538	$ 21,893	$ 21,378
Tax positions related to current year:
Additions	2,468	311	346
Reductions	0	0	0
Tax positions related to prior year:
Additions	424	855	235
Reductions	(3,239)	0	0
Settlements	(1,655)	0	0
Lapses in statutes of limitations	(94)	(521)	(66)
Balance as of end of year	20,442	22,538	$ 21,893
Gross unrecognized tax benefits	20,600
Gross urecognized tax benefits, if recognized, would affect effective tax rate	15,600
Gross interest and penalties accrued	$ 200	$ 1,800

Unrecognized Tax Benefits, Current Period Tax Positions [Abstract]

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The amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date, including interest and penalties

+ References

No definition available.

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Unrecognized Tax Benefits, Prior Period Tax Positions [Abstract]

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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