Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue, net, including related parties (Note 11)	$ 4,604	$ 2,013	$ 19,123	$ 10,271
Operating expenses:
Cost of goods sold	3,935	1,936	8,741	5,227
Research and development	1,609	1,453	5,023	4,118
Sales and marketing	976	581	2,488	1,656
General and administrative	2,852	2,490	8,309	7,236
Total operating expenses	9,372	6,460	24,561	18,237
Loss from operations	(4,768)	(4,447)	(5,438)	(7,966)
Interest expense	187	191	611	571
Loss in joint venture	712	1,618	3,294	5,417
Changes in fair value of promissory note	0	(973)	(605)	1,394
Other income, net	(1,503)	(571)	(3,502)	(1,626)
Loss before tax expense	(4,164)	(4,712)	(5,236)	(13,722)
Tax expense	0	0	0	0
Net Income (Loss) Attributable to Parent, Total	$ (4,164)	$ (4,712)	$ (5,236)	$ (13,722)
Net loss per share - basic (in usd per share)	$ (0.08)	$ (0.13)	$ (0.12)	$ (0.38)
Net loss per share - diluted (in usd per share)	$ (0.08)	$ (0.13)	$ (0.12)	$ (0.38)
Weighted average common shares outstanding - basic (in shares)	49,147,630	35,719,749	43,671,321	35,338,132
Weighted average common shares outstanding - diluted (in shares)	49,147,630	35,719,749	43,671,321	35,338,132