CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUE:
Material sales	$ 27,494	$ 30,286	$ 98,746	$ 70,175
Royalty and license fees	5,357	1,456	35,200	23,956
Technology development and support revenue	41	1,084	911	3,030
Total revenue	32,892	32,826	134,857	97,161
OPERATING EXPENSES:
Cost of material sales	7,388	9,783	29,236	21,157
Research and development	7,915	7,862	28,639	24,116
Selling, general and administrative	6,625	6,411	19,576	17,918
Patent costs and amortization of acquired technology	4,081	3,899	12,801	13,038
Royalty and license expense	803	624	3,060	2,108
Total operating expenses	26,812	28,579	93,312	78,337
Operating income	6,080	4,247	41,545	18,824
INTEREST INCOME	187	206	598	594
INTEREST EXPENSE	(17)	(13)	(55)	(31)
INCOME BEFORE INCOME TAXES	6,250	4,440	42,088	19,387
INCOME TAX (EXPENSE) BENEFIT	(1,966)	1,102	(13,360)	(3,221)
NET INCOME	$ 4,284	$ 5,542	$ 28,728	$ 16,166
NET INCOME PER COMMON SHARE:
Basic (in dollars per share)	$ 0.09	$ 0.12	$ 0.62	$ 0.35
Diluted (in dollars per share)	$ 0.09	$ 0.12	$ 0.61	$ 0.35
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME PER COMMON SHARE:
Weighted average common shares outstanding - Basic (in shares)	46,197,713	45,912,512	46,398,644	45,865,395
Weighted average common shares outstanding - Diluted (in shares)	46,633,763	46,594,843	46,956,428	46,547,568