CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020
Total net revenue	[1]	$ 113,448	$ 73,994	$ 225,024	$ 152,411
Total cost of revenue		52,943	36,221	109,374	77,900
Total gross profit		60,505	37,773	115,650	74,511
Operating expenses:
Research and development		24,783	19,498	48,311	41,621
Selling, general and administrative		33,586	27,005	68,497	58,223
Amortization of intangibles		0	742	507	1,512
Restructuring and related charges		0	82	43	758
Total operating expenses		58,369	47,327	117,358	102,114
Income (loss) from operations		2,136	(9,554)	(1,708)	(27,603)
Interest expense, net		(2,630)	(3,062)	(5,233)	(5,965)
Loss on convertible debt extinguishment		0	(834)	0	(834)
Other income (expense), net		(147)	(373)	872	(646)
Loss before income taxes		(641)	(13,823)	(6,069)	(35,048)
Provision for income taxes		1,368	1,578	2,064	2,307
Net loss		$ (2,009)	$ (15,401)	$ (8,133)	$ (37,355)
Net loss per share:
Basic and diluted		$ (0.02)	$ (0.16)	$ (0.08)	$ (0.39)
Shares used in per share calculation:
Basic and diluted		101,218	96,727	100,539	96,255
Appliance & Integration [Member]
Total net revenue		$ 78,598	$ 42,224	$ 158,574	$ 89,976
Total cost of revenue		40,365	22,784	82,984	49,071
SaaS & Service [Member]
Total net revenue		34,850	31,770	66,450	62,435
Total cost of revenue		$ 12,578	$ 13,437	$ 26,390	$ 28,829

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