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Goodwill and intangible assets

12 Months Ended

Sep. 30, 2021

5.	Goodwill and intangible assets

Goodwill and intangible assets increased from prior year by $21.3 million and $18.4 million, respectively, as a result of a business acquisition. See Note 15, “Business acquisition”. There were no changes to the carrying value of goodwill during the year ended September 30, 2020. Total amortization expense related to intangible assets were $0.5 million for the year ended September 30, 2021 and $0.2 million for each of the years ended September 30, 2020 and 2019.

The intangible assets balances are presented below:


	September 30, 2021
	Weighted average	Gross
	Amortization period	carrying		Accumulated		Net book
(in thousands, except for years)	in years	amount		amortization		value
Developed Technology	16	$	19,120	$	(1,361)	$	17,759
Tradenames & Trademarks	2		20		(20)		—
Customer Relationships	1.5		510		(7)		503
Total indefinite-lived intangible assets		$	19,650	$	(1,388)	$	18,262


	September 30, 2020
	Weighted average	Gross
	Amortization period	carrying		Accumulated		Net book
(in thousands, except for years)	in years	amount		amortization		value
Developed Technology	6	$	1,220	$	(913)	$	307
Tradenames & Trademarks	2		20		(20)		—
Total indefinite-lived intangible assets		$	1,240	$	(933)	$	307

Future annual amortization expense is as follows (in thousands):


Years ending September 30,
2022	$	1,593
2023		1,138
2024		1,053
2025		1,053
2026		1,053
Thereafter		12,372
	$	18,262