Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue
Royalties and license fees	$ 7,529	$ 9,356	$ 22,787	$ 26,333
Product sales	5,839	5,769	16,449	15,586
Research and development	4,599	3,483	11,393	12,430
Total revenue	17,967	18,608	50,629	54,349
Operating costs and expenses
Product costs	1,704	2,388	5,813	6,820
Customer research and development	4,379	4,642	14,141	12,748
Other research and development	3,522	4,223	8,923	13,507
Selling, general and administrative	4,916	4,944	14,998	13,667
Goodwill impairment charge			5,650
Restructuring charges			1,236	1,306
Asset impairment charges		191		2,265
Total operating costs and expenses	14,521	16,388	50,761	50,313
Income (loss) from operations	3,446	2,220	(132)	4,036
Other income (loss)
Investment income	147	241	498	819
Impairment loss on investments		(2,577)		(2,577)
Other income, net	172	298	401	301
Other income (loss)	319	(2,038)	899	(1,457)
Income before income taxes	3,765	182	767	2,579
Income tax benefit (provision)	77	(1,098)	(608)	(2,005)
Net income (loss)	$ 3,842	$ (916)	$ 159	$ 574
Basic net income (loss) per common share	$ 0.22	$ (0.05)	$ 0.01	$ 0.03
Diluted net income (loss) per common share	$ 0.22	$ (0.05)	$ 0.01	$ 0.03
Weighted average shares outstanding
Basic	17,437	17,360	17,409	17,373
Dilutive effect of outstanding stock options and non-vested stock	92		47	12
Diluted	17,529	17,360	17,456	17,385