CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
REVENUE:
Material sales	$ 46,637,000	$ 24,304,000
Royalty and license fees	7,025,000	5,342,000
Contract research services	1,904,000	57,000
Total revenue	55,566,000	29,703,000
COST OF SALES	12,987,000	5,052,000
Gross margin	42,579,000	24,651,000
OPERATING EXPENSES:
Research and development	11,818,000	10,476,000
Selling, general and administrative	10,077,000	6,660,000
Amortization of acquired technology and other intangible assets	5,492,000	2,750,000
Patent costs	1,547,000	1,344,000
Royalty and license expense	1,587,000	875,000
Total operating expenses	30,521,000	22,105,000
OPERATING INCOME	12,058,000	2,546,000
Interest income, net	671,000	324,000
Other (expense) income, net	(19,000)
Interest and other income, net	652,000	324,000
INCOME BEFORE INCOME TAXES	12,710,000	2,870,000
INCOME TAX EXPENSE	(2,345,000)	(921,000)
NET INCOME	$ 10,365,000	$ 1,949,000
NET INCOME PER COMMON SHARE:
BASIC	$ 0.22	$ 0.04
DILUTED	$ 0.22	$ 0.04
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME PER COMMON SHARE:
BASIC	46,661,559	46,774,360
DILUTED	46,742,894	46,907,558
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.03