Condensed Consolidated Statements of Net Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 26, 2020	Dec. 28, 2019
Net sales	$ 484,392	$ 392,971	$ 1,162,851	$ 1,027,898
Costs and Expenses:
Cost of Product Sold	406,688	340,694	987,642	932,392
Selling, General and Administrative	22,613	19,986	60,211	53,936
Plant Restructuring (Credit)/Charge	(118)	793	169	6,745
Other Operating Income	(35,351)	(1,617)	(33,716)	(8,618)
Total Costs and Expenses	393,832	359,856	1,014,306	984,455
Operating Income	90,560	33,115	148,545	43,443
Loss From Equity Investment	(728)	0	752	0
Other (Income)/Loss	(234)	(1,656)	2,457	(5,263)
Interest Expense, Net	1,531	2,690	4,586	9,183
Earnings From Continuing Operations Before Income Taxes	89,991	32,081	140,750	39,523
Income Taxes From Continuing Operations	17,531	7,653	29,479	9,357
Earnings From Continuing Operations	72,460	24,428	111,271	30,166
Earnings From Discontinued Operations (net of income taxes)	0	955	0	955
Net Earnings	$ 72,460	$ 25,383	$ 111,271	$ 31,121
Basic Earnings per Common Share
Continuing Operations (in dollars per share)	$ 7.96	$ 2.65	$ 12.18	$ 3.23
Discontinued Operations (in dollars per share)	0	0.10	0	0.10
Net Basic Earnings per Common Share (in dollars per share)	7.96	2.75	12.18	3.33
Diluted Earnings per Common Share:
Continuing Operations (in dollars per share)	7.90	2.63	12.09	3.20
Discontinued Operations (in dollars per share)	0	0.10	0	0.10
Net Diluted Earnings per Common Share (in dollars per share)	$ 7.90	$ 2.73	$ 12.09	$ 3.31