Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net revenues:
Net revenues	$ 7,177,000	$ 8,206,000
Costs and expenses:
Cost of sales	5,076,000	6,237,000
Selling, general and administrative expenses	4,197,000	5,409,000
Costs and Expenses	9,273,000	11,646,000
Operating loss	(2,096,000)	(3,440,000)
Other (loss) income:
Loss on settlement of litigation	0	(450,000)
Interest income, net	702,000	57,000
Income from governmental assistance programs	34,000	207,000
Loss before income taxes	(1,360,000)	(3,626,000)
Provision for income tax expense	0	0
Net loss	$ (1,360,000)	$ (3,626,000)
Basic loss per share (in dollars per share)	$ (0.06)	$ (0.17)
Diluted loss per share (in dollars per share)	$ (0.06)	$ (0.17)
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:
Net revenues	$ 6,075,000	$ 7,941,000
License [Member]
Net revenues:
Net revenues	$ 1,102,000	$ 265,000