Income Taxes (Reconciliation of Effective Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 28, 2022	May 29, 2021	May 30, 2020
Income Taxes [Abstract]
Statutory federal income tax	$ 34,907	$ (2,087)	$ 4,226
State income taxes, net	5,237	1,124	(309)
Domestic manufacturers deduction	0	3,566	684
Enacted net operating loss carryback provision	0	(16,014)	(3,041)
Tax exempt interest income	(9)	(50)	(111)
Reversal of outside basis in equity investment Red River	(7,310)	0	0
Non-taxable remeasurement gain Red River	(955)	0	0
Other, net	1,704	1,452	282
Income tax expense (benefit)	$ 33,574	$ (12,009)	$ 1,731