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Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 01, 2017 | Apr. 02, 2016 | Apr. 01, 2017 | Apr. 02, 2016 | Sep. 30, 2016
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments | $ 1,000 | $ 1,000 | $ 2,500 | $ 900 |
Forward Contracts | Other Current Liabilities [Member] |  |  |  |  |
Foreign currency cash flow hedge asset at fair value | 2,758 |  | 2,758 |  |
Forward Contracts | Other Current Assets [Member] |  |  |  |  |
Foreign currency cash flow hedge asset at fair value | 1,597 |  | 1,597 |  |
Forward Contracts | Other Assets [Member] |  |  |  |  |
Foreign currency cash flow hedge asset at fair value | 10 |  | 10 |  |
Forward Contracts | Other Noncurrent Liabilities [Member] |  |  |  |  |
Foreign currency cash flow hedge asset at fair value | $ 4 |  | 4 |  |
Forward Contracts | Not Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative, Remaining Maturity | 3 months |  |  |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value | $ 1,081 |  | 1,081 |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value | $ 2,717 |  | 2,717 |  |
Forward Contracts | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] |  |  |  |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value |  |  |  |  | $ 1,693
Forward Contracts | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value |  |  |  |  | 216
Forward Contracts | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative, Remaining Maturity | 13 months |  |  |  |
Foreign currency cash flow hedge asset at fair value | $ 526 |  | 526 |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | $ 45 |  | $ 45 |  |
Forward Contracts | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] |  |  |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value |  |  |  |  | 1,477
Forward Contracts | Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |
Foreign currency cash flow hedge asset at fair value |  |  |  |  | $ 44

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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Fair value as of the balance sheet date of all foreign currency derivative assets 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=56946850&loc=SL5624163-113959 + Details
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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=56946850&loc=SL5624163-113959 + Details
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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as 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 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 + Details
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