CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Revenue:
Revenue	$ 102,296	$ 102,715	$ 200,387	$ 201,338
Cost of revenue:
Cost of revenue	42,258	52,467	82,697	94,569
Gross margin	60,038	50,248	117,690	106,769
Operating expenses:
Research and development	19,377	21,081	39,042	44,022
Selling, general, and administrative	19,759	21,068	40,540	48,111
Amortization of acquired intangible assets	3,390	4,523	6,779	10,159
Restructuring charges	3,126	4,376	4,467	5,405
Acquisition related charges	0	864	0	1,531
Impairment of acquired intangible assets	0	11,900	0	11,900
Total operating expenses	45,652	63,812	90,828	121,128
Income (loss) from operations	14,386	(13,564)	26,862	(14,359)
Interest expense	(3,538)	(4,968)	(8,525)	(10,082)
Other (expense) income, net	(2,109)	(348)	(1,956)	206
Income (loss) before income taxes	8,739	(18,880)	16,381	(24,235)
Income tax expense	180	1,343	414	1,940
Net income (loss)	$ 8,559	$ (20,223)	$ 15,967	$ (26,175)
Net income (loss) per share:
Basic (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Diluted (in usd per share)	$ 0.06	$ (0.16)	$ 0.12	$ (0.21)
Shares used in per share calculations:
Basic (in shares)	132,206	124,843	131,599	124,460
Diluted (in shares)	137,221	124,843	136,133	124,460
Product
Revenue:
Revenue	$ 98,096	$ 98,294	$ 189,708	$ 193,403
Cost of revenue:
Cost of revenue	42,258	52,208	82,697	94,310
Licensing and services
Revenue:
Revenue	4,200	4,421	10,679	7,935
Cost of revenue:
Cost of revenue	$ 0	$ 259	$ 0	$ 259