Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
REVENUES:
Net sales	$ 17,998	$ 10,900	$ 32,010	$ 21,780
Royalty income	4,990	6,455	11,000	12,540
Total revenues	22,988	17,355	43,010	34,320
OPERATING COSTS AND EXPENSES:
Cost of products sold	7,837	6,340	16,063	10,560
Research and development	5,654	3,970	10,772	8,247
Selling, general and administrative	2,713	2,065	5,517	4,364
Total operating costs and expenses	16,204	12,375	32,352	23,171
INCOME FROM OPERATIONS	6,784	4,980	10,658	11,149
OTHER INCOME (EXPENSE):
Interest income	65	127	119	282
Interest expense	(480)	(508)	(970)	(1,023)
Other income		89	1	93
Total other expense, net	(415)	(292)	(850)	(648)
INCOME BEFORE INCOME TAX	6,369	4,688	9,808	10,501
Income tax expense	(2,072)	(1,354)	(3,248)	(3,323)
NET INCOME	$ 4,297	$ 3,334	$ 6,560	$ 7,178
BASIC EARNINGS PER SHARE	$ 0.50	$ 0.39	$ 0.76	$ 0.82
DILUTED EARNINGS PER SHARE	$ 0.49	$ 0.38	$ 0.75	$ 0.79
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	8,652,648	8,511,339	8,638,779	8,774,481
DILUTED WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	8,749,797	8,816,750	8,741,719	9,035,543