Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 04, 2015	Sep. 30, 2014
Financial assets:
Cash equivalents—Level 1	$ 52,916	$ 101,113
Forward contracts	851	339
Financial assets, fair value	53,767	101,452
Financial liabilities:
Forward contracts	888	911
Contingent Consideration Liability, Fair Value Disclosure	21,800	15,191
Liabilities, Fair Value Disclosure, Recurring	22,688	16,102
Level 1
Financial assets:
Cash equivalents—Level 1	52,916	101,113
Forward contracts	0	0
Financial assets, fair value	52,916	101,113
Financial liabilities:
Forward contracts	0	0
Contingent Consideration Liability, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure, Recurring	0	0
Level 2
Financial assets:
Cash equivalents—Level 1	0	0
Forward contracts	851	339
Financial assets, fair value	851	339
Financial liabilities:
Forward contracts	888	911
Contingent Consideration Liability, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure, Recurring	888	911
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
Contingent Consideration Liability, Fair Value Disclosure	21,800	15,191
Liabilities, Fair Value Disclosure, Recurring	21,800	15,191
Current portion [Member]
Financial liabilities:
Contingent Consideration Liability, Fair Value Disclosure	0
acquired entity name-ThingWorx [Member]
Financial liabilities:
Contingent Consideration Liability, Fair Value Disclosure	18,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	2,809
Acquired entity name: ColdLight [Member]
Financial liabilities:
Contingent Consideration Liability, Fair Value Disclosure	3,800
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	3,800
Acquired entity name: ColdLight [Member] | Fair Value, Inputs, Level 3 [Member]
Financial liabilities:
Contingent Consideration Liability, Fair Value Disclosure		$ 0
Non-current portion [Member] [Member]
Financial liabilities:
Contingent Consideration Liability, Fair Value Disclosure	$ 1,300