CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Revenue:
Revenues	$ 101,484	$ 91,971	$ 302,822	$ 290,695
Costs and expenses:
Research and development	19,131	25,648	63,153	79,857
Selling, general, and administrative	21,775	21,290	69,886	67,133
Amortization of acquired intangible assets	3,823	8,526	13,982	25,777
Restructuring charges	90	3,071	5,495	4,713
Acquisition related charges	0	681	1,531	3,208
Impairment of acquired intangible assets	586	36,198	12,486	36,198
Gain on sale of building	0	(4,624)	0	(4,624)
Total costs and expenses	88,525	129,439	304,222	337,594
Income (loss) from operations	12,959	(37,468)	(1,400)	(46,899)
Interest expense	(5,500)	(3,888)	(15,582)	(14,112)
Other expense, net	(452)	(2,027)	(246)	(2,104)
Income (loss) before income taxes	7,007	(43,383)	(17,228)	(63,115)
Income tax expense (benefit)	33	(331)	1,973	234
Net income (loss)	$ 6,974	$ (43,052)	$ (19,201)	$ (63,349)
Net loss per share, basic (in usd per share)	$ 0.05	$ (0.35)	$ (0.15)	$ (0.52)
Net loss per share, diluted (in usd per share)	$ 0.05	$ (0.35)	$ (0.15)	$ (0.52)
Shares used in per share calculations, basic (in shares)	127,816	122,990	125,578	122,393
Shares used in per share calculations, diluted (in shares)	129,474	122,990	125,578	122,393
Product
Revenue:
Revenues	$ 97,932	$ 87,369	$ 291,335	$ 263,206
Costs and expenses:
Cost of revenue	43,120	38,032	137,430	120,395
Licensing and services
Revenue:
Revenues	3,552	4,602	11,487	27,489
Costs and expenses:
Cost of revenue	$ 0	$ 617	$ 259	$ 4,937