Intangible Assets

3 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

8. Intangible Assets

Intangible assets consisted of the following:

	December 31, 2020
(In thousands)	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists and relationships		8.9	$	13,917	$	(8,252	)	$	5,665
Developed technology		11.5		9,816		(4,512	)		5,304
Patents and other		14.1		3,551		(2,155	)		1,396
Total definite-lived intangible assets				27,284		(14,919	)		12,365
Unamortized intangible assets:
Trademarks and trade names				580		—			580
Total intangible assets			$	27,864	$	(14,919	)	$	12,945

	September 30, 2020
(In thousands)	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists and relationships		8.9	$	13,356	$	(7,594	)	$	5,762
Developed technology		11.5		9,685		(4,200	)		5,485
Patents and other		14.1		3,551		(2,095	)		1,456
Total definite-lived intangible assets				26,592		(13,889	)		12,703
Unamortized intangible assets:
Trademarks and trade names				580		—			580
Total intangible assets			$	27,172	$	(13,889	)	$	13,283

Intangible asset amortization expense was $0.6 million and $0.7 million for the three months ended December 31, 2020 and 2019, respectively. Based on the intangible assets in service as of December 31, 2020, estimated amortization expense for the remainder of fiscal 2021 and each of the next five fiscal years is as follows:

(In thousands)
Remainder of 2021	$	1,914
2022		2,527
2023		1,896
2024		1,799
2025		1,759
2026		726

Future amortization amounts presented above are estimates. Actual future amortization expense may be different as a result of future acquisitions, impairments, changes in amortization periods, foreign currency translation rates, or other factors.