CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net revenues:
Net product sales	$ 3,561	$ 4,844	$ 6,338	$ 10,315
Licensing revenue	161	1,185	385	2,348
Net revenues	3,722	6,029	6,723	12,663
Costs and expenses:
Cost of sales	3,475	4,462	6,246	9,560
Other operating costs and expenses	17	44	24	177
Selling, general and administrative expenses	1,402	1,196	2,684	2,683
Total costs and expenses	4,894	5,702	8,954	12,420
Operating (loss) income	(1,172)	327	(2,231)	243
Other income:
Interest income, net	130	57	234	108
(Loss) income before income taxes	(1,042)	384	(1,997)	351
(Benefit) provision for income tax expense		219	(65)	240
Net (loss) income	$ (1,042)	$ 165	$ (1,932)	$ 111
Basic net (loss) income per share	$ (0.04)	$ 0.01	$ (0.07)	$ 0.00
Diluted net (loss) income per share	$ (0.04)	$ 0.01	$ (0.07)	$ 0.00
Weighted average shares outstanding
Basic	26,223	27,130	26,640	27,130
Diluted	26,223	27,130	26,640	27,130