Intangible Assets

12 Months Ended

Mar. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

Note 2. Intangible Assets

	March 31, 2021
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Useful Life
Customer relationships	$	2,711	$	(2,711	)	$	—		—
Brands associated with acquired cell lines		559		(190	)		369	26.4 years
Product licenses		944		(694	)		250	2.6 years
Other intangibles		176		(176	)		—		—
Total	$	4,390	$	(3,771	)	$	619	16.8 years

	March 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Useful Life
Customer relationships	$	2,436	$	(2,436	)	$	—		—
Brands associated with acquired cell lines		502		(158	)		344	27.4 years
Product licenses		849		(568	)		281	3.5 years
Other intangibles		158		(158	)		—		—
Total	$	3,945	$	(3,320	)	$	625	16.3 years

Amortization expense was $73, $94, and $104 in financial years 2021, 2020, and 2019, respectively. Total future amortization expense for intangible assets that have definite lives, based upon the Company’s existing intangible assets and their current estimated useful lives as of March 31, 2021, is estimated as follows:

2022	$	76
2023		76
2024		76
2025		77
2026		14
Thereafter		300
Total	$	619