Balance Sheet Components - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 04, 2021	Jan. 03, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 122,582	$ 137,543
Less: accumulated depreciation and impairment	(90,075)	(90,777)
Property, plant and equipment, net	32,507	46,766
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,883	17,134
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	29,257	29,385
Solar power systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,653	30,110
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	50,903	49,935
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,855	7,899
Work-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,031	$ 3,080