Goodwill and Other Identifiable Intangible Assets, Net (Goodwill Rollforward) (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 154,535	[1]
Foreign currency translation adjustment	(583)
Ending balance	153,952
IoT Solutions Segment
Goodwill [Roll Forward]
Beginning balance	50,177
Foreign currency translation adjustment	(179)
Ending balance	49,998
IoT Products & Services Segment
Goodwill [Roll Forward]
Beginning balance	104,358
Foreign currency translation adjustment	(404)
Ending balance	$ 103,954

[1] Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.