Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
REVENUES:
Net sales	$ 14,012	$ 10,880
Royalty income	6,010	6,084
Total revenues	20,022	16,964
OPERATING COSTS AND EXPENSES:
Cost of products sold	8,226	4,220
Research and development	5,118	4,277
Selling, general and administrative	2,804	2,298
Total operating costs and expenses	16,148	10,795
INCOME FROM OPERATIONS	3,874	6,169
OTHER INCOME (EXPENSE):
Interest income	54	155
Interest expense	(490)	(515)
Other income	1	4
Total other expense, net	(435)	(356)
INCOME BEFORE INCOME TAX	3,439	5,813
Income tax expense	(1,176)	(1,968)
NET INCOME	$ 2,263	$ 3,845
BASIC EARNINGS PER SHARE	$ 0.26	$ 0.43
DILUTED EARNINGS PER SHARE	$ 0.26	$ 0.41
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	8,624,911	9,037,623
DILUTED WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	8,733,937	9,300,323