Investment in Unconsolidated Subsidiary (Assets, Liabilities and members' equity) (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 31, 2023	Dec. 30, 2023	Apr. 01, 2023	Dec. 31, 2022
ASSETS
Assets, Current	$ 1,619,310		$ 1,855,666
Property, Plant and Equipment, Net	2,910,335		2,935,185
Other assets	246,561		234,960
Segment Assets	10,942,769		11,061,084
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	103,075		60,703
Other non-current liabilities	303,927		349,809
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,682,990		4,693,691	$ 4,121,599	$ 3,896,490
Liabilities and Equity	10,942,769		$ 11,061,084
Diamond Green Diesel Holdings LLC Joint Venture [Member]
ASSETS
Assets, Current	1,814,038	$ 1,877,430
Property, Plant and Equipment, Net	3,870,508	3,838,800
Other assets	102,279	89,697
Segment Assets	5,786,825	5,805,927
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	128,942	278,639
Other Liabilities, Current	302,519	417,918
Long-term Debt, Excluding Current Maturities	729,756	737,097
Other non-current liabilities	17,331	16,996
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,608,277	4,355,277
Liabilities and Equity	$ 5,786,825	$ 5,805,927