Balance Sheet Components - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 03, 2022	Jan. 02, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 107,550	$ 111,311
Vehicle finance leases	5,403	0
Less: accumulated depreciation and impairment	(56,875)	(77,751)
Property, plant and equipment, net	50,675	33,560
Testing equipment and tools
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	191	3,848
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,424	28,936
Solar power systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,207	6,500
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	12,040	23,112
Internal-use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,004	34,083
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,907	8,582
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,390	2,174
Work-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,984	$ 4,076