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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Segment Information and Major Customers Goodwill by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting, Other Significant Reconciling Item [Line Items]
Goodwill	$ 154,535		$ 131,995	$ 109,448
IoT Products & Services
Segment Reporting, Other Significant Reconciling Item [Line Items]
Goodwill	104,358	$ 104,600	98,981
IoT Solutions
Segment Reporting, Other Significant Reconciling Item [Line Items]
Goodwill	$ 50,177	$ 50,000	$ 33,014