Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Product sales	$ 7,701	$ 7,181
Royalties and license fees	8,001	7,954
Research, development and other	2,059	1,406
Total revenue	17,761	16,541
Operating costs and expenses:
Product costs	2,628	2,366
Research and development	5,970	3,634
Selling, general and administrative	4,862	3,648
Acquisition transaction, integration and other costs		2,491
Acquired intangible asset amortization	596	354
Contingent consideration accretion expense	437	109
Total operating costs and expenses	14,493	12,602
Operating income	3,268	3,939
Other income (loss):
Investment income, net	85	1
Foreign exchange gain (loss)	674	(135)
Other income (loss), net	759	(134)
Income before income taxes	4,027	3,805
Income tax provision	(1,727)	(1,152)
Net income	$ 2,300	$ 2,653
Basic net income per share	$ 0.17	$ 0.20
Diluted net income per share	$ 0.17	$ 0.20
Weighted average number of shares outstanding:
Basic	13,200	12,966
Diluted	13,446	13,186