CONSOLIDATE STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
REVENUE:
Material sales	$ 12,848	$ 6,681	$ 23,377	$ 11,218
Royalty and license fees	15,435	2,665	15,857	5,334
Technology development and support revenue	1,704	1,906	3,373	4,301
Total revenue	29,987	11,252	42,607	20,853
OPERATING EXPENSES:
Cost of material sales	(1,611)	(142)	(2,699)	(245)
Research and development	(7,236)	(5,551)	(13,897)	(12,106)
Selling, general and administrative	(5,189)	(4,496)	(9,486)	(8,368)
Patent costs	(2,255)	(1,915)	(4,123)	(3,528)
Royalty and license expense	(786)	(218)	(1,036)	(420)
Total operating expenses	17,077	12,322	31,241	24,667
Operating income (loss)	12,910	(1,070)	11,366	(3,814)
INTEREST INCOME	357	184	714	280
INTEREST EXPENSE	18	8	38	18
GAIN (LOSS) ON STOCK WARRANT LIABILITY			0	4,430
INCOME (LOSS) BEFORE INCOME TAX EXPENSE	13,249	3,602	12,042	(7,982)
INCOME TAX EXPENSE (BENEFIT)	2,285	289	(2,299)	586
NET INCOME (LOSS):			9,743	(8,568)
OTHER COMPREHENSIVE INCOME (LOSS):
Unrealized gain (loss) on available-for-sale securities	65	(217)	(39)	(206)
Amortization of prior service cost and actuarial loss for retirement plan included in net periodic pension cost	149	150	297	300
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(214)	67	(258)	(94)
COMPREHENSIVE INCOME (LOSS)	$ 11,178	$ 3,246	$ 10,001	$ (8,474)
NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in dollars per share)	$ 0.24	$ 0.07	$ 0.21	$ (0.20)
DILUTED (in dollars per share)	$ 0.23	$ (0.03)	$ 0.21	$ (0.20)
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in shares)	45,953,312	45,024,373	45,871,166	41,977,113
DILUTED (in shares)	46,857,309	45,201,175	46,896,898	41,977,113