CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Revenue:
Product	$ 87,369	$ 102,816	$ 263,206	$ 280,374
Licensing and services	4,602	10,409	27,489	28,572
Total revenue	91,971	113,225	290,695	308,946
Costs and expenses:
Cost of product revenue	38,032	45,695	120,395	125,412
Cost of licensing and services revenue	617	106	4,937	580
Research and development	25,648	27,747	79,857	91,270
Selling, general, and administrative	21,290	29,244	67,133	75,857
Amortization of acquired intangible assets	8,526	8,260	25,777	25,292
Restructuring charges	3,071	317	4,713	8,316
Acquisition related charges	681	0	3,208	94
Impairment of acquired intangible assets	36,198	7,866	36,198	7,866
Gain on sale of building	(4,624)	0	(4,624)	0
Total costs and expenses	129,439	119,235	337,594	334,687
Loss from operations	(37,468)	(6,010)	(46,899)	(25,741)
Interest expense	(3,888)	(5,235)	(14,112)	(15,257)
Other (expense) income, net	(1,828)	209	(1,412)	3,558
Loss before income taxes and equity in net loss of an unconsolidated affiliate	(43,184)	(11,036)	(62,423)	(37,440)
Income tax (benefit) expense	(331)	971	234	7,410
Equity in net loss of an unconsolidated affiliate, net of tax	(199)	(407)	(692)	(1,085)
Net loss	$ (43,052)	$ (12,414)	$ (63,349)	$ (45,935)
Net loss per share, basic and diluted (in usd per share)	$ (0.35)	$ (0.10)	$ (0.52)	$ (0.38)
Shares used in per share calculations, basic and diluted (in shares)	122,990	120,584	122,393	119,596