Property and Equipment - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended	9 Months Ended
Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Oct. 02, 2016	Sep. 27, 2015
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 25,493,000	$ 27,623,000	$ 52,065,000	$ 55,928,000
Asset Impairment Charges	1,591,000	$ 0	1,591,000	$ 0	$ 772,000	$ 0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	$ 400,000		$ 400,000

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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- Definition

The carrying amount on the books of the entity of the impaired asset to be disposed of by a method other than sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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