CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Revenue:
Product	$ 83,168	$ 89,335	$ 175,837	$ 177,558
Licensing and services	10,969	9,874	22,887	18,163
Total revenue	94,137	99,209	198,724	195,721
Costs and expenses:
Cost of product revenue	40,749	40,710	82,363	79,717
Cost of licensing and services revenue	2,179	73	4,320	474
Research and development	26,820	30,915	54,209	63,523
Selling, general, and administrative	21,938	23,005	45,843	46,613
Amortization of acquired intangible assets	8,737	8,311	17,251	17,032
Restructuring charges	1,576	2,568	1,642	7,999
Acquisition related charges	867	0	2,527	94
Total costs and expenses	102,866	105,582	208,155	215,452
Loss from operations	(8,729)	(6,373)	(9,431)	(19,731)
Interest expense	(4,656)	(5,062)	(10,224)	(10,022)
Other income, net	564	2,532	416	3,349
Loss before income taxes and equity in net loss of an unconsolidated affiliate	(12,821)	(8,903)	(19,239)	(26,404)
Income tax expense	47	4,539	565	6,439
Equity in net loss of an unconsolidated affiliate, net of tax	(154)	(368)	(493)	(678)
Net loss	$ (13,022)	$ (13,810)	$ (20,297)	$ (33,521)
Net loss per share, basic and diluted (in usd per share)	$ (0.11)	$ (0.12)	$ (0.17)	$ (0.28)
Shares used in per share calculations, basic and diluted (in shares)	122,390	119,445	122,095	119,125