Investment in Unconsolidated Subsidiary (Revenues and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 31, 2023
Revenues:
Operating revenues	$ 1,420,299	$ 1,791,172
Expenses:
Cost of sales and operating expenses	1,116,666	1,366,973
Total costs and expenses	1,361,549	1,629,664
Operating income	137,169	255,845
Income before income taxes	85,495	216,829
Net income	81,588	189,855
Income tax expense	3,907	$ 26,974
Diamond Green Diesel Holdings LLC Joint Venture [Member]
Revenues:
Operating revenues	1,411,115		$ 1,680,050
Expenses:
Cost of sales and operating expenses	1,159,356		1,421,404
Inventory Valuation Adjustment	21,638		0
Depreciation, amortization and accretion expense	65,290		58,607
Total costs and expenses	1,246,284		1,480,011
Operating income	164,831		200,039
Other income	3,220		2,041
Interest and debt expense, net	(11,242)		(13,406)
Income before income taxes	156,809		188,674
Net income	156,838		188,674
Income tax expense	$ (29)		$ 0