CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Net revenues:
Product revenues	$ 24,869	$ 24,689	$ 49,732	$ 48,594
Intellectual property revenues	723	64	2,943	1,886
Net revenues	25,592	24,753	52,675	50,480
Costs and expenses:
Cost of product revenues	10,979	11,369	21,655	22,344
Engineering, research and development	10,896	9,777	21,575	20,281
Selling, general and administrative	8,005	7,390	15,859	15,360
Amortization of intangible assets	91	89	179	186
Costs and expenses	29,971	28,625	59,268	58,171
Loss from operations	(4,379)	(3,872)	(6,593)	(7,691)
Other expense (income):
Interest expense, net	1,492	1,966	3,196	3,936
Gain on compound embedded derivative	0	0	0	(803)
Loss on extinguishment of debt	0	0	1,594	0
Other expense (income), net	32	5	93	(26)
Other expense, net	1,524	1,971	4,883	3,107
Loss before income tax benefit	(5,903)	(5,843)	(11,476)	(10,798)
Income tax benefit	(72)	(996)	(274)	(919)
Net loss	$ (5,831)	$ (4,847)	$ (11,202)	$ (9,879)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.10)	$ (0.13)	$ (0.19)	$ (0.30)
Weighted average common shares outstanding - basic and diluted	58,327	37,215	57,965	32,587