CONSOLIDATE STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUE:
Material sales	$ 10,984	$ 15,386	$ 34,361	$ 26,604
Royalty and license fees	396	4,564	16,253	9,898
Technology development and support revenue	1,124	1,827	4,497	6,128
Total revenue	12,504	21,777	55,111	42,630
OPERATING EXPENSES:
Cost of material sales	(1,094)	(2,406)	(3,793)	(2,651)
Research and development	(8,177)	(6,080)	(22,074)	(18,186)
Selling, general and administrative	(5,275)	(4,957)	(14,761)	(13,325)
Patent costs and amortization of acquired technology	(3,736)	(1,938)	(7,859)	(5,466)
Royalty and license expense	(283)	(462)	(1,319)	(882)
Total operating expenses	(18,565)	(15,843)	(49,806)	(40,510)
Operating (loss) income	(6,061)	5,934	5,305	2,120
INTEREST INCOME	272	364	986	644
INTEREST EXPENSE	(5)	(13)	(43)	(31)
GAIN (LOSS) ON STOCK WARRANT LIABILITY		240		(4,190)
(LOSS) INCOME BEFORE INCOME TAX BENEFIT (EXPENSE)	(5,794)	6,525	6,248	(1,457)
Income Tax Expense (Benefit)	326	(536)	(1,973)	(1,122)
NET (LOSS) INCOME	(5,468)	5,989	4,275	(2,579)
OTHER COMPREHENSIVE INCOME (LOSS):
Unrealized gain on available-for-sale securities	55	215	16	9
Amortization of prior service cost and actuarial loss for retirement plan included in net periodic pension cost	148	150	445	450
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	203	365	461	459
COMPREHENSIVE INCOME (LOSS)	$ (5,265)	$ 6,354	$ 4,736	$ (2,120)
NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in dollars per share)	$ (0.12)	$ 0.13	$ 0.09	$ (0.06)
DILUTED (in dollars per share)	$ (0.12)	$ 0.12	$ 0.09	$ (0.06)
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in shares)	46,006,290	45,314,893	45,916,536	43,101,933
DILUTED (in shares)	46,006,290	46,799,557	46,912,557	43,101,933