Goodwill and other Identifiable Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Goodwill [Line Items]
Goodwill	$ 210,135	$ 153,422
Acquisition	13,472	56,242
Goodwill, Purchase Accounting Adjustments	847
Foreign currency translation adjustment	1,068	471
Goodwill	225,522	210,135
IoT Solutions
Goodwill [Line Items]
Goodwill	49,770	49,903
Acquisition	0	0
Goodwill, Purchase Accounting Adjustments	0
Foreign currency translation adjustment	572	(133)
Goodwill	50,342	49,770
IoT Products and Services
Goodwill [Line Items]
Goodwill	160,365	103,519
Acquisition	13,472	56,242
Goodwill, Purchase Accounting Adjustments	847
Foreign currency translation adjustment	496	604
Goodwill	$ 175,180	$ 160,365

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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