Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020	Jan. 03, 2021
Income Tax Disclosure [Abstract]
Tax expense (benefit)	[1]	$ 2,425	$ 1,106	$ (2,799)	$ 1,991
Income from continuing operations before income taxes and equity in earnings of unconsolidated investees		77,194	$ 55,633	22,472	$ 76,679
Unrecognized tax benefits		$ 12,239		$ 12,239		$ 12,584

[1] We have related-party transactions with TotalEnergies SE and its affiliates, Maxeon Solar, and unconsolidated entities in which we have a direct equity investment. These related-party transactions are recorded within the "revenue: solar power systems, components, and other," "cost of revenue: solar power systems, components, and other," "operating expenses: research and development," "operating expenses: sales, general and administrative," "operating expenses: income transition services agreement, net," and "other income (expense), net: interest expense," "(provision for) benefit from income taxes" financial statement line items in our unaudited condensed consolidated statements of operations (see Note 2, Note 9, and Note 11).