CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 02, 2021	Mar. 27, 2020
Total net revenue	[1]	$ 111,576	$ 78,417
Total cost of revenue		56,431	41,679
Total gross profit		55,145	36,738
Operating expenses:
Research and development		23,528	22,123
Selling, general and administrative		34,911	31,218
Amortization of intangibles		507	770
Restructuring and related charges		43	676
Total operating expenses		58,989	54,787
Loss from operations		(3,844)	(18,049)
Interest expense, net		(2,603)	(2,903)
Other income (expense), net		1,019	(273)
Loss before income taxes		(5,428)	(21,225)
Provision for income taxes		696	729
Net loss		$ (6,124)	$ (21,954)
Net loss per share:
Basic and diluted		$ (0.06)	$ (0.23)
Shares used in per share calculation:
Basic and diluted		99,868	95,575
Appliance & Integration [Member]
Total net revenue		$ 79,976	$ 47,752
Total cost of revenue		42,619	26,287
SaaS & Service [Member]
Total net revenue		31,600	30,665
Total cost of revenue		$ 13,812	$ 15,392

[1] Revenue is attributed to countries based on the location of the customer.