Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue, net, including related parties (Note 11)	$ 5,010	$ 3,670	$ 10,893	$ 8,826
Cost of goods sold	3,836	3,232	7,631	7,282
Gross profit	1,174	438	3,262	1,544
Operating expenses:
Research and development	3,022	1,830	5,891	3,570
Sales and marketing	1,708	1,066	3,190	2,149
General and administrative	2,942	3,044	7,458	6,361
Total operating expenses	7,672	5,940	16,539	12,080
Loss from operations	(6,498)	(5,502)	(13,277)	(10,536)
Interest expense	0	184	8	366
Loss in joint venture	721	684	1,581	1,266
Other income, net	(90)	(375)	(290)	(820)
Loss before tax expense	(7,129)	(5,995)	(14,576)	(11,348)
Tax expense	0	0	0	0
Net loss	(7,129)	(5,995)	(14,576)	(11,348)
Deemed dividend related to warrant modification and issuance of Inducement Warrants (Note 8)	0	0	5,612	0
Net loss attributable to common stockholders	(7,129)	(5,995)	(20,188)	(11,348)
Net loss attributable to common stockholders	$ (7,129)	$ (5,995)	$ (20,188)	$ (11,348)
Net loss per share - basic (in usd per share)	$ (0.12)	$ (0.10)	$ (0.33)	$ (0.20)
Net loss per share - diluted (in usd per share)	$ (0.12)	$ (0.10)	$ (0.33)	$ (0.20)
Weighted average common shares outstanding - basic (in shares)	61,138,691	56,619,662	61,071,729	55,518,297
Weighted average common shares outstanding - diluted (in shares)	61,138,691	56,619,662	61,071,729	55,518,297