CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net revenues:
Net revenues	$ 1,435	$ 2,586	$ 3,048	$ 4,849
Costs and expenses:
Cost of sales	1,550	2,442	3,299	4,665
Selling, general and administrative expenses	973	918	2,056	1,935
Total costs and expenses	2,523	3,360	5,355	6,600
Operating (loss)	(1,088)	(774)	(2,307)	(1,751)
Other income:
Interest income, net	222	202	459	377
(Loss) before income taxes	(866)	(572)	(1,848)	(1,374)
Provision for income tax expense	10	23	15	71
Net (loss)	$ (876)	$ (595)	$ (1,863)	$ (1,445)
Basic (loss) per share	$ (0.04)	$ (0.03)	$ (0.09)	$ (0.06)
Diluted (loss) per share	$ (0.04)	$ (0.03)	$ (0.09)	$ (0.06)
Weighted average shares outstanding
Basic	21,043	22,405	21,043	22,515
Diluted	21,043	22,405	21,043	22,515
Net Product Sales
Net revenues:
Net revenues	$ 1,379	$ 2,474	$ 2,937	$ 4,619
Licensing Revenue
Net revenues:
Net revenues	$ 56	$ 112	$ 111	$ 230