Goodwill and other Identifiable Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019		Sep. 30, 2018
Goodwill [Line Items]
Goodwill	$ 154,535	[1]	$ 131,995
Acquisitions			23,216
Foreign currency translation adjustment	(1,113)		(676)
Goodwill	153,422		154,535	[1]
IoT Solutions
Goodwill [Line Items]
Goodwill	50,177		33,014
Acquisitions			17,553
Foreign currency translation adjustment	(274)		(390)
Goodwill	49,903		50,177
IoT Products and Services
Goodwill [Line Items]
Goodwill	104,358		98,981
Acquisitions			5,663
Foreign currency translation adjustment	(839)		(286)
Goodwill	$ 103,519		$ 104,358

[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.