Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Operations
Net sales	$ 131,410	$ 95,122	$ 229,751	$ 185,963
Cost of sales	82,341	64,449	145,545	121,513
Gross profit	49,069	30,673	84,206	64,450
Operating expenses, net:
Selling, general, and administrative	24,365	21,891	47,247	43,558
Research and development	20,119	21,011	38,704	40,779
Amortization of intangible assets	7,979	2,899	15,941	5,802
Restructuring	683	801	3,040	1,193
Asset impairment			126
Changes in contingent consideration				(29,368)
Other, net	(51)	(158)	(1,002)	(370)
Total operating expenses, net	53,095	46,444	104,056	61,594
Operating income (loss)	(4,026)	(15,771)	(19,850)	2,856
Interest income	243	180	530	386
Interest expense	(124)	(108)	(250)	(150)
Income (loss) before income taxes	(3,907)	(15,699)	(19,570)	3,092
Income tax expense (benefit)	4,479	(488)	7,926	(857)
Net income (loss)	$ (8,386)	$ (15,211)	$ (27,496)	$ 3,949
Income (loss) per common share:
Basic (in dollars per share)	$ (0.21)	$ (0.39)	$ (0.69)	$ 0.10
Diluted (in dollars per share)	$ (0.21)	$ (0.39)	$ (0.69)	$ 0.10
Weighted average number of shares:
Basic (in shares)	39,693	39,379	39,666	39,275
Diluted (in shares)	39,693	39,379	39,666	40,061