CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net revenues:
Net revenues	$ 2,586,000	$ 3,722,000	$ 4,849,000	$ 6,723,000
Costs and expenses:
Cost of sales	2,434,000	3,475,000	4,645,000	6,246,000
Other operating costs and expenses	8,000	17,000	20,000	24,000
Selling, general and administrative expenses	918,000	1,402,000	1,935,000	2,684,000
Total costs and expenses	3,360,000	4,894,000	6,600,000	8,954,000
Operating (loss)	(774,000)	(1,172,000)	(1,751,000)	(2,231,000)
Other income:
Interest income, net	202,000	130,000	377,000	234,000
(Loss) before income taxes	(572,000)	(1,042,000)	(1,374,000)	(1,997,000)
Provision (benefit) for income tax expense	23,000	0	71,000	(65,000)
Net (loss)	$ (595,000)	$ (1,042,000)	$ (1,445,000)	$ (1,932,000)
Basic (loss) per share	$ (0.03)	$ (0.04)	$ (0.06)	$ (0.07)
Diluted (loss) per share	$ (0.03)	$ (0.04)	$ (0.06)	$ (0.07)
Weighted average shares outstanding
Basic	22,405	26,223	22,515	26,640
Diluted	22,405	26,223	22,515	26,640
Net Product Sales
Net revenues:
Net revenues	$ 2,474,000	$ 3,561,000	$ 4,619,000	$ 6,338,000
Licensing Revenue
Net revenues:
Net revenues	$ 112,000	$ 161,000	$ 230,000	$ 385,000