CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
REVENUE:
Material sales	$ 95,713	$ 44,472	$ 37,444
Royalty and license fees	47,006	31,698	15,345
Technology development and support revenue	3,920	7,074	8,500
Total revenue	146,639	83,244	61,289
OPERATING EXPENSES:
Cost of material sales	28,889	4,528	3,731
Research and development	34,215	30,032	24,129
Selling, general and administrative	24,745	19,550	18,940
Patent costs and amortization of acquired technology	17,273	13,385	7,442
Royalty and license expense	3,273	2,073	1,360
Total operating expenses	108,395	69,568	55,602
Operating income	38,244	13,676	5,687
INTEREST INCOME	811	1,240	994
INTEREST EXPENSE	(47)	(48)	(50)
LOSS ON STOCK WARRANT LIABILITY	0	0	(4,190)
INCOME BEFORE INCOME TAXES	39,008	14,868	2,441
INCOME TAX BENEFIT (EXPENSE)	35,044	(5,208)	714
NET INCOME	$ 74,052	$ 9,660	$ 3,155
NET INCOME PER COMMON SHARE:
BASIC (in dollars per share)	$ 1.61	$ 0.21	$ 0.07
DILUTED (in dollars per share)	$ 1.59	$ 0.21	$ 0.07
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME PER COMMON SHARE:
BASIC (in shares)	45,898,019	45,951,276	43,737,968
DILUTED (in shares)	46,543,605	46,883,602	45,140,394