CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net revenues:
Product revenues	$ 1,631	$ 4,855	$ 7,167	$ 14,682
Intellectual property and service revenues	3,121	1,810	5,091	7,263
Total net revenues	4,752	6,665	12,258	21,945
Cost of revenues:
Cost of product revenues	694	1,425	2,679	4,510
Provision for excess and obsolete inventories	154	26	605	186
Cost of intellectual property and service revenues	844	917	1,180	2,955
Total cost of revenues	1,692	2,368	4,464	7,651
Gross profit	3,060	4,297	7,794	14,294
Operating expenses:
Research and development	3,325	4,672	12,339	13,727
Marketing and sales	1,144	1,772	4,103	5,836
General and administrative	1,851	1,925	5,913	5,699
Restructuring charges, net	0	924	1,001	1,391
Reversal of accrued royalties, net	(332)	(455)	(832)	(2,030)
Total operating expenses	5,988	8,838	22,524	24,623
Operating loss	(2,928)	(4,541)	(14,730)	(10,329)
Other income (expense):
Other income (expense)	41	23	(3)	10
Interest:
Interest income	32	8	72	100
Interest expense	(37)	(44)	(78)	(237)
Interest expense, net	(5)	(36)	(6)	(137)
Total other income (expense), net	36	(13)	(9)	(127)
Loss before income taxes	(2,892)	(4,554)	(14,739)	(10,456)
Income taxes	108	233	341	479
Net loss	$ (3,000)	$ (4,787)	$ (15,080)	$ (10,935)
Basic and diluted loss per common share:
Net loss per common share (in dollars per share)	$ (0.09)	$ (0.16)	$ (0.47)	$ (0.40)
Weighted average common shares outstanding - basic and diluted (in shares)	34,269	30,475	32,198	27,019