Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue, net, including related parties (Note 12)	$ 5,156	$ 3,216
Cost of goods sold	4,050	2,567
Gross profit	1,106	649
Operating expenses:
Research and development	1,740	1,823
Sales and marketing	1,083	687
General and administrative	3,317	2,743
Total operating expenses	6,140	5,253
Loss from operations	(5,034)	(4,604)
Interest expense	182	204
Loss in joint venture	582	1,490
Changes in fair value of promissory note	0	1,024
Other income, net	(445)	(270)
Loss before tax expense	(5,353)	(7,052)
Tax expense	0	0
Net loss	$ (5,353)	$ (7,052)
Net loss per share - basic (in usd per share)	$ (0.10)	$ (0.17)
Net loss per share - diluted (in usd per share)	$ (0.10)	$ (0.17)
Weighted average common shares outstanding - basic (in shares)	54,404,830	40,637,213
Weighted average common shares outstanding - diluted (in shares)	54,404,830	40,637,213