Balance Sheet Components - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 29, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 145,316	$ 143,350
Less: accumulated depreciation	(94,919)	(87,490)
Property, plant and equipment, net	50,397	55,860
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,192	17,080
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	29,385	22,237
Solar power systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	30,895	29,192
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	57,436	62,292
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,909	8,043
Construction-in-process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,499	$ 4,506