Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue:
Total revenue	$ 52,483	$ 24,854	$ 104,614	$ 73,963
Operating costs and expenses:
Cost, Product and Service [Extensible Enumeration]	Product Sales [Member]	Product Sales [Member]	Product Sales [Member]	Product Sales [Member]
Product costs	$ 6,921	$ 5,141	$ 17,926	$ 14,745
Research and development	11,232	12,975	36,899	38,350
Selling, general and administrative	12,874	12,854	39,077	33,159
Acquired intangible asset amortization	879	1,024	2,659	3,184
Restructuring expense			1,282
Contingent consideration (gain) expense	(835)	3	(829)	9
Total operating costs and expenses	31,071	31,997	97,014	89,447
Operating income (loss)	21,412	(7,143)	7,600	(15,484)
Other expense:
Interest expense, net	(884)	(145)	(2,594)	(410)
Foreign exchange (loss) gain	(61)	85	(261)	120
Investment income, net	182	22	531	73
Other expense	(763)	(38)	(2,324)	(217)
Income (loss) before income taxes	20,649	(7,181)	5,276	(15,701)
Income tax (expense) benefit	(13,303)	1,530	(13,506)	3,155
Net income (loss)	$ 7,346	$ (5,651)	$ (8,230)	$ (12,546)
Basic net income (loss) per share	$ 0.52	$ (0.41)	$ (0.59)	$ (0.90)
Diluted net income (loss) per share	$ 0.52	$ (0.41)	$ (0.59)	$ (0.90)
Weighted average number of shares outstanding:
Basic	14,050	13,929	14,020	13,907
Diluted	14,072	13,929	14,020	13,907
Product Sales [Member]
Revenue:
Total revenue	$ 15,667	$ 13,919	$ 45,251	$ 40,227
Royalties and License Fees [Member]
Revenue:
Total revenue	34,153	8,795	52,347	26,738
Research, Development and Other [Member]
Revenue:
Total revenue	$ 2,663	$ 2,140	$ 7,016	$ 6,998