Derivatives And Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
Apr. 01, 2017	Oct. 01, 2016
Revolving Credit Facility [Member]
Derivatives And Fair Value Measurements [Line Items]
Line of Credit, Current	$ 75,000
Not Designated as Hedging Instrument [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	359	$ 52
Foreign Exchange Forward [Member]
Derivatives And Fair Value Measurements [Line Items]
Cash flow hedge loss to be reclassified within twelve months	2,691
Foreign Exchange Forward [Member] \| Derivatives Designated As Hedging Instruments [Member] \| MALAYSIA
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	67,000	73,700
Foreign Exchange Forward [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	117,700	109,600
Foreign Exchange Forward [Member] \| Other Current Liabilities [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Cash Flow Hedge Liability at Fair Value	2,695	486
Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	$ 75,000	75,000
Fixed interest rate	0.875%
Interest Rate Cash Flow Hedge Asset at Fair Value	$ 4
Interest Rate Cash Flow Hedge Liability at Fair Value		132
Interest Rate Swaps [Member] \| Other Current Liabilities [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Liability at Fair Value	$ 0	$ 132

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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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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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments.

+ References

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- Definition

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

+ References

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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Line-of-Credit Arrangement
-URI http://asc.fasb.org/extlink&oid=6517033

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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