Goodwill and Other Identifiable Intangible Assets, Net (Tables)

3 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Intangible Assets

Amortizable intangible assets were (in thousands):

	December 31, 2020						September 30, 2020
	Gross carrying amount		Accum. amort.		Net		Gross carrying amount		Accum. amort.		Net
Purchased and core technology	$	76,473	$	(57,017)	$	19,456	$	76,011	$	(55,482)	$	20,529
License agreements	112		(112)		—		112		(112)		—
Patents and trademarks	22,936		(13,968)		8,968		22,836		(13,535)		9,301
Customer relationships	125,805		(36,957)		88,848		125,500		(34,232)		91,268
Non-compete agreements	600		(480)		120		600		(450)		150
Total	$	225,926	$	(108,534)	$	117,392	$	225,059	$	(103,811)	$	121,248

Schedule of Estimated Future Amortization Expense Related to Intangible Assets

Estimated amortization expense related to intangible assets for the remainder of fiscal 2021 and the five succeeding fiscal years is (in thousands):

2021 (nine months)	$	11,616
2022	$	14,720
2023	$	12,518
2024	$	11,815
2025	$	8,358
2026	$	8,126

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reportable segments are (in thousands):

	Three months ended December 31,
	IoT Products and Services		IoT Solutions		Total
Balance on September 30, 2020	$	160,365	$	49,770	$	210,135
Adjustment (see Note 2)	846		—		846
Foreign currency translation adjustment	834		551		1,385
Balance at December 31, 2020	$	162,045	$	50,321	$	212,366