Summary Of Significant Accounting Policies Disclosure Fair Value Unbservable Inputs (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration		$ 15,191
Fair value of contingent consideration recorded for acquisition		3,800	$ 13,048	$ 0
Contingent consideration		13,000	15,191
acquired entity name-ThingWorx [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration		15,191	0
Fair value of contingent consideration recorded for acquisition		0	13,048
Change in fair value of contingent consideration		2,809	2,143
payment of contingent consideration	$ (9,000)
Contingent consideration		9,000	15,191
Acquired entity name: ColdLight [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration		0	0
Fair value of contingent consideration recorded for acquisition		3,800	0
Change in fair value of contingent consideration		200	0
payment of contingent consideration		0
Contingent consideration		$ 4,000	$ 0