Segment Information Total Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2020	Sep. 30, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		$ 526,869	$ 398,698
IoT Products & Services Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		383,593	215,651
IoT Solutions Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		88,191	90,255
Unallocated
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	[1]	$ 55,085	$ 92,792

[1] Unallocated consists of cash and cash equivalents and current marketable securities.