Goodwill and intangible assets (Tables)

12 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets Balances

The intangible assets balances are presented below:

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

	September 30, 2019
(in thousands, except for years)	Useful lives in years		Gross carrying amount		Accumulated amortization			Net book value
Developed Technology		6	$	1,220	$	(712	)	$	508
Tradenames & Trademarks		2		20		(20	)		—
Total indefinite-lived intangible assets			$	1,240	$	(732	)	$	508

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

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

Years ending September 30,
2021	$	204
2022		103
	$	307