Investment in National Beef Packing Company, LLC (Details - Investment rollforward) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 24, 2023	Mar. 25, 2023	Sep. 24, 2022	Jun. 25, 2022	Mar. 26, 2022	Sep. 30, 2023	Sep. 24, 2022
Equity Method Investments and Joint Ventures [Abstract]
Beginning Investment Balance	$ 191,397	$ 187,156	$ 179,556	$ 193,013	$ 223,141	$ 213,290	$ 179,556	$ 213,290
Equity in net income	14,755	14,705	7,600	44,509	52,779	62,606	37,060	159,894
Distributions	(24,808)	(10,464)	0	(27,318)	(82,907)	(52,755)	(35,271)	(162,980)
Ending Investment Balance	$ 181,344	$ 191,397	$ 187,156	$ 210,204	$ 193,013	$ 223,141	$ 181,344	$ 210,204