Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue, net, including related parties (Note 11)	$ 4,670	$ 4,493	$ 15,563	$ 13,319
Cost of goods sold	4,595	7,162	12,226	14,444
Gross profit (loss)	75	(2,669)	3,337	(1,125)
Operating expenses:
Research and development	2,839	2,325	8,730	5,895
Sales and marketing	1,745	1,447	4,935	3,596
General and administrative	4,412	3,457	11,870	9,818
Total operating expenses	8,996	7,229	25,535	19,309
Loss from operations	(8,921)	(9,898)	(22,198)	(20,434)
Interest expense	0	184	8	550
Loss in joint venture	978	799	2,559	2,065
Other expense (income), net	102	(421)	(188)	(1,241)
Loss before tax expense	(10,001)	(10,460)	(24,577)	(21,808)
Tax expense	0	0	0	0
Net loss	(10,001)	(10,460)	(24,577)	(21,808)
Deemed dividend related to warrant modification and issuance of Inducement Warrants (Note 8)	2,721	0	8,333	0
Net loss attributable to common stockholders	(12,722)	(10,460)	(32,910)	(21,808)
Net loss attributable to common stockholders	$ (12,722)	$ (10,460)	$ (32,910)	$ (21,808)
Net loss per share - basic (in usd per share)	$ (0.20)	$ (0.18)	$ (0.54)	$ (0.38)
Net loss per share - diluted (in usd per share)	$ (0.20)	$ (0.18)	$ (0.54)	$ (0.38)
Weighted average common shares outstanding - basic (in shares)	62,183,843	56,739,450	61,458,945	55,926,828
Weighted average common shares outstanding - diluted (in shares)	62,183,843	56,739,450	61,458,945	55,926,828