Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 6,867	$ 5,666
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	6,822	6,628
Change in stock-based compensation capitalized in inventory
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	45	(962)
Cost of revenue | SunPower Energy Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	559	168
Cost of revenue | SunPower Technologies
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	551	0
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	760	593
Sales, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 4,997	$ 4,905