Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net revenues:
Revenue	$ 1,809	$ 1,074
Costs and expenses:
Cost of sales	1,470	879
Selling, general and administrative expenses	1,198	1,344
Total costs and expenses	2,668	2,223
Operating loss	(859)	(1,149)
Other (loss) income:
Interest income, net	294	50
Income from governmental assistance programs	0	22
Loss before income taxes	(565)	(1,077)
Provision for income tax expense	0	0
Net loss	$ (565)	$ (1,077)
Basic loss per share (in dollars per share)	$ (0.03)	$ (0.05)
Diluted loss per share (in dollars per share)	$ (0.03)	$ (0.05)
Weighted average shares outstanding
Basic (in shares)	21,042,652	21,042,652
Diluted (in shares)	21,042,652	21,042,652
Product [Member]
Net revenues:
Revenue	$ 1,732	$ 1,004
License [Member]
Net revenues:
Revenue	$ 77	$ 70