Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 5,879	$ 6,270	$ 12,746	$ 11,936
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	5,545	6,790	12,367	13,418
Change in stock-based compensation capitalized in inventory
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	334	(520)	379	(1,482)
Cost of revenue | SunPower Energy Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	471	460	1,030	628
Cost of revenue | SunPower Technologies
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	704	673	1,255	673
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	630	879	1,390	1,472
Sales, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 4,074	$ 4,258	$ 9,071	$ 9,163