CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net revenues:
Net product sales	$ 121,628	$ 156,975
Licensing revenue	6,768	6,276
Net revenues	128,396	163,251
Costs and expenses:
Cost of sales	108,631	142,270
Other operating costs and expenses	1,355	1,352
Selling, general and administrative expenses	7,759	7,764
Impairment of trademark	1,326
Total costs and expenses	119,071	151,386
Operating income	9,325	11,865
Other income:
Realized gain on sale of marketable securities		828
Gain on sale of building		347
Interest income, net	340	70
Nonoperating Income (Expense), Total	340	1,245
Income before income taxes	9,665	13,110
Provision for income taxes	3,666	2,476
Net income	$ 5,999	$ 10,634
Basic net income per share	$ 0.22	$ 0.39
Diluted net income per share	$ 0.22	$ 0.39
Weighted average shares outstanding
Basic	27,130	27,130
Diluted	27,130	27,130