CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUE:
Material sales	$ 47,041	$ 23,465	$ 140,506	$ 70,084
Royalty and license fees	12,013	5,209	72,705	52,569
Contract research services	2,629	1,540	6,551	1,656
Total revenue	61,683	30,214	219,762	124,309
COST OF SALES	13,465	6,458	37,762	17,194
Gross margin	48,218	23,756	182,000	107,115
OPERATING EXPENSES:
Research and development	11,596	10,118	34,099	31,562
Selling, general and administrative	11,695	8,465	31,611	22,728
Amortization of acquired technology and other intangible assets	5,498	5,461	16,485	11,039
Patent costs	1,875	1,900	5,096	4,476
Royalty and license expense	1,764	815	6,342	3,656
Total operating expenses	32,428	26,759	93,633	73,461
OPERATING INCOME (LOSS)	15,790	(3,003)	88,367	33,654
Interest income, net	861	568	2,328	1,544
Other income (expense), net	6	(68)	(7)	(1,982)
Interest and other income, net	867	500	2,321	(438)
INCOME (LOSS) BEFORE INCOME TAXES	16,657	(2,503)	90,688	33,216
INCOME TAX BENEFIT (EXPENSE)	(3,137)	1,003	(19,616)	(10,965)
NET INCOME (LOSS)	$ 13,520	$ (1,500)	$ 71,072	$ 22,251
NET INCOME (LOSS) PER COMMON SHARE:
BASIC	$ 0.28	$ (0.03)	$ 1.50	$ 0.47
DILUTED	$ 0.28	$ (0.03)	$ 1.49	$ 0.47
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME (LOSS) PER COMMON SHARE:
BASIC	46,801,051	46,947,621	46,716,726	46,889,913
DILUTED	46,871,720	46,947,621	46,793,429	47,015,262
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.03		$ 0.09