CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Revenue:
Revenue	$ 103,469	$ 101,484	$ 303,856	$ 302,822
Cost of revenue:
Cost of revenue	42,030	43,120	124,727	137,689
Gross margin	61,439	58,364	179,129	165,133
Operating expenses:
Research and development	20,032	19,131	59,074	63,153
Selling, general, and administrative	21,078	21,775	61,618	69,886
Amortization of acquired intangible assets	3,389	3,823	10,168	13,982
Restructuring charges	252	90	4,719	5,495
Impairment of acquired intangible assets	0	586	0	12,486
Acquisition related charges	0	0	0	1,531
Total operating expenses	44,751	45,405	135,579	166,533
Income (loss) from operations	16,688	12,959	43,550	(1,400)
Interest expense	(2,022)	(5,500)	(10,547)	(15,582)
Other expense, net	(61)	(452)	(2,017)	(246)
Income (loss) before income taxes	14,605	7,007	30,986	(17,228)
Income tax expense	1,066	33	1,480	1,973
Net income (loss)	$ 13,539	$ 6,974	$ 29,506	$ (19,201)
Net income (loss) per share:
Basic (in usd per share)	$ 0.10	$ 0.05	$ 0.22	$ (0.15)
Diluted (in usd per share)	$ 0.10	$ 0.05	$ 0.21	$ (0.15)
Shares used in per share calculations:
Basic (in shares)	132,997	127,816	132,065	125,578
Diluted (in shares)	138,894	129,474	137,679	125,578
Product
Revenue:
Revenue	$ 97,477	$ 97,932	$ 287,185	$ 291,335
Cost of revenue:
Cost of revenue	42,030	43,120	124,727	137,430
Licensing and services
Revenue:
Revenue	5,992	3,552	16,671	11,487
Cost of revenue:
Cost of revenue	$ 0	$ 0	$ 0	$ 259