Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Apr. 04, 2015	Sep. 30, 2014
Financial assets:
Cash equivalents—Level 1	$ 61,037	$ 101,113
Forward contracts	39us-gaap_DerivativeAssets	339us-gaap_DerivativeAssets
Financial assets, fair value	61,076us-gaap_AssetsFairValueDisclosure	101,452us-gaap_AssetsFairValueDisclosure
Financial liabilities:
Forward contracts	255us-gaap_DerivativeLiabilities	911us-gaap_DerivativeLiabilities
Liabilities, Fair Value Disclosure, Recurring	16,527	16,102
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	1,081
Contingent Consideration Liability, Fair Value Disclosure	16,272	15,191
Level 1
Financial assets:
Cash equivalents—Level 1	61,037	101,113
Forward contracts	0	0
Financial assets, fair value	61,037	101,113
Financial liabilities:
Forward contracts	0	0
Liabilities, Fair Value Disclosure, Recurring	0	0
Contingent Consideration Liability, Fair Value Disclosure	0	0
Level 2
Financial assets:
Cash equivalents—Level 1	0	0
Forward contracts	39	339
Financial assets, fair value	39	339
Financial liabilities:
Forward contracts	255	911
Liabilities, Fair Value Disclosure, Recurring	255	911
Contingent Consideration Liability, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Cash equivalents—Level 1	0	0
Forward contracts	0	0
Financial assets, fair value	0	0
Financial liabilities:
Forward contracts	0	0
Liabilities, Fair Value Disclosure, Recurring	16,272	15,191
Contingent Consideration Liability, Fair Value Disclosure	$ 16,272	$ 15,191

Contingent Consideration Liability, Fair Value Disclosure

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (a)(1)

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

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-Name Accounting Standards Codification

-Topic 815

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-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312

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-Name Accounting Standards Codification

-Topic 815

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-Paragraph 6

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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- Definition

Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity.

+ References

No definition available.

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