Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Net revenues:
Revenue	$ 1,675	$ 2,198
Costs and expenses:
Cost of sales	1,664	2,004
Selling, general and administrative expenses	1,320	1,416
Total cost of sales and SG&A	2,984	3,420
Operating loss	(1,309)	(1,222)
Other income:
Interest income, net	169	263
Loss before income taxes	(1,140)	(959)
Provision for income tax expense	0	3
Net loss	$ (1,140)	$ (962)
Basic loss per share (in dollars per share)	$ (0.05)	$ (0.05)
Diluted loss per share (in dollars per share)	$ (0.05)	$ (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	$ 1,589	$ 2,129
License [Member]
Net revenues:
Revenue	$ 86	$ 69