Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Revenues:
Net product sales	$ 12,862	$ 17,258	$ 37,704	$ 40,739
Licensing revenue	1,385	1,080	2,486	2,251
Net revenues	14,247	18,338	40,190	42,990
Costs and expenses:
Cost of sales	11,785	15,635	34,194	36,619
Other operating costs and expenses	127	171	444	322
Selling, general and administrative expenses	2,305	2,325	4,731	4,513
Total costs and expenses	14,217	18,131	39,369	41,454
Operating income	30	207	821	1,536
Other income:
Interest income, net	44	121	109	343
Income before income taxes	74	328	930	1,879
Provision (benefit) for income taxes	27	(60)	232	122
Net income	$ 47	$ 388	$ 698	$ 1,757
Net income per share:
Basic	$ 0.00	$ 0.01	$ 0.03	$ 0.06
Diluted	$ 0.00	$ 0.01	$ 0.03	$ 0.06
Weighted average shares outstanding:
Basic	27,130	27,130	27,130	27,130
Diluted	27,130	27,130	27,130	27,130