CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Revenue:
Product	$ 356,502	$ 390,704	$ 369,200
Licensing and services	29,459	36,350	36,766
Total revenue	385,961	427,054	405,966
Costs and expenses:
Cost of product revenue	164,657	179,983	184,914
Cost of licensing and services revenue	4,725	637	1,143
Research and development	103,357	117,518	136,868
Selling, general, and administrative	90,718	98,602	97,349
Amortization of acquired intangible assets	31,340	33,575	29,580
Restructuring charges	7,196	9,267	19,239
Acquisition related charges	3,781	6,305	22,450
Impairment of goodwill and acquired intangible assets	32,431	7,866	21,655
Gain on sale of building	(4,624)	0	0
Total costs and expenses	433,581	453,753	513,198
Loss from operations	(47,620)	(26,699)	(107,232)
Interest expense	(18,807)	(20,327)	(18,389)
Other (expense) income, net	(3,286)	2,844	(1,072)
Loss before income taxes	(69,713)	(44,182)	(126,693)
Income tax expense	849	9,917	32,540
Net loss	$ (70,562)	$ (54,099)	$ (159,233)
Net loss per share, basic and diluted (in dollars per share)	$ (0.58)	$ (0.45)	$ (1.36)
Shares used in per share calculations, basic and diluted (in shares)	122,677	119,994	117,387