Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net revenues:
Revenue	$ 1,215,000	$ 2,738,000	$ 2,890,000	$ 4,936,000
Costs and expenses:
Cost of sales	1,216,000	2,466,000	2,880,000	4,470,000
Selling, general and administrative expenses	1,195,000	1,389,000	2,515,000	2,805,000
Total cost of sales and SG&A	2,411,000	3,855,000	5,395,000	7,275,000
Operating loss	(1,196,000)	(1,117,000)	(2,505,000)	(2,339,000)
Other income:
Interest income, net	153,000	236,000	322,000	499,000
(Loss) before income taxes	(1,043,000)	(881,000)	(2,183,000)	(1,840,000)
Provision for income tax expense	0	0	0	3,000
Net (loss)	$ (1,043,000)	$ (881,000)	$ (2,183,000)	$ (1,843,000)
Basic (loss) per share (in dollars per share)	$ (0.05)	$ (0.04)	$ (0.1)	$ (0.09)
Diluted (loss) per share (in dollars per share)	$ (0.05)	$ (0.04)	$ (0.1)	$ (0.09)
Weighted average shares outstanding
Basic (in shares)	21,042,652	21,042,652	21,042,652	21,042,652
Diluted (in shares)	21,042,652	21,042,652	21,042,652	21,042,652
Product [Member]
Net revenues:
Revenue	$ 1,127,000	$ 2,670,000	$ 2,716,000	$ 4,799,000
License [Member]
Net revenues:
Revenue	$ 88,000	$ 68,000	$ 174,000	$ 137,000