Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue:
Royalties and license fees	$ 10,556	$ 7,908	$ 25,207	$ 22,566
Product sales	7,512	6,583	22,866	18,082
Research, development and other	1,904	1,423	5,139	3,887
Total revenue	19,972	15,914	53,212	44,535
Operating costs and expenses:
Product costs	2,777	2,174	8,069	6,031
Research and development	4,693	3,860	13,195	11,839
Selling, general and administrative	4,483	3,872	12,984	11,387
Acquisition transaction, integration and other costs	61		3,192
Acquisition related intangible asset amortization	806	151	1,940	454
Contingent consideration accretion expense	555		1,056
Total operating costs and expenses	13,375	10,057	40,436	29,711
Operating income	6,597	5,857	12,776	14,824
Other income (loss):
Investment income, net	19	36	37	149
Gain on strategic investments	16		377
Foreign exchange gain (loss)	234		(336)
Other (loss) income, net	(6)	(40)	(6)	496
Other income (loss) , net	263	(4)	72	645
Income before income taxes	6,860	5,853	12,848	15,469
Income tax provision	(2,857)	(1,929)	(5,507)	(4,879)
Net income	$ 4,003	$ 3,924	$ 7,341	$ 10,590
Basic net income per share	$ 0.31	$ 0.30	$ 0.57	$ 0.81
Diluted net income per share	$ 0.30	$ 0.30	$ 0.56	$ 0.79
Weighted average number of shares outstanding:
Basic	12,995	13,002	12,969	13,057
Diluted	13,284	13,279	13,203	13,324