Business Segments (Narrative) (Details) $ in Thousands		12 Months Ended
		Dec. 30, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of Business Segments | segment		3
Capital expenditures for the year ended:	[1]	$ 555,480	$ 391,309	$ 274,126
Capital assets		155,500	588,800
Fuel Ingredients [Member]
Segment Reporting Information [Line Items]
Capital expenditures for the year ended:		$ 39,053	$ 37,568	$ 26,078

[1] Excludes capital assets acquired by acquisition in fiscal 2023 and fiscal 2022 of approximately $155.5 million and $588.8 million, respectively.