Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Product sales	$ 8,327	$ 7,512	$ 23,964	$ 22,866
Royalties and license fees	7,244	10,556	22,564	25,207
Research, development and other	2,219	1,904	6,526	5,139
Total revenue	17,790	19,972	53,054	53,212
Operating costs and expenses:
Product costs	2,914	2,777	8,104	8,069
Research and development	7,927	4,693	22,105	13,195
Selling, general and administrative	5,232	4,483	15,170	12,984
Acquired intangible asset amortization	603	806	1,790	1,940
Contingent consideration (gain) expense	(629)	555	(803)	1,056
Acquisition transaction, integration and other costs		61		3,192
Total operating costs and expenses	16,047	13,375	46,366	40,436
Operating income	1,743	6,597	6,688	12,776
Other (loss) income:
Investment income, net	104	19	274	37
Foreign exchange (loss) gain	(594)	234	(121)	(336)
Gain on strategic investment and other		10		371
Other (loss) income, net	(490)	263	153	72
Income before income taxes	1,253	6,860	6,841	12,848
Income tax provision	(533)	(2,926)	(3,315)	(5,440)
Net income	$ 720	$ 3,934	$ 3,526	$ 7,408
Basic net income per share	$ 0.05	$ 0.30	$ 0.27	$ 0.57
Diluted net income per share	$ 0.05	$ 0.30	$ 0.26	$ 0.56
Weighted average number of shares outstanding:
Basic	13,155	12,995	13,190	12,969
Diluted	13,385	13,284	13,404	13,203