Condensed Consolidated Statements of Net Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016
Net Sales	$ 387,689	$ 356,767	$ 1,015,086	$ 981,508
Costs and Expenses:
Cost of Product Sold	357,188	318,841	951,639	890,602
Selling, General and Administrative	20,112	21,116	56,430	57,023
Plant Restructuring Charge	101	1,316	157	2,778
Other Operating (Income) Loss	17	1,153	(2,615)	1,172
Total Costs and Expenses	377,418	342,426	1,005,611	951,575
Operating Income	10,271	14,341	9,475	29,933
Earnings From Equity Investment		(333)	(21)	(500)
Interest Expense, Net	4,012	2,414	10,662	6,709
Earnings (Loss) Before Income Taxes	6,259	12,260	(1,166)	23,724
Income Taxes (Benefit) Expense	1,882	4,471	(1,605)	8,149
Net Earnings	4,377	7,789	439	15,575
Earnings Applicable to Common Stock	$ 4,354	$ 7,712	$ 420	$ 15,416
Basic Earnings per Common Share (in dollars per share)	$ 0.45	$ 0.79	$ 0.04	$ 1.58
Diluted Earnings per Common Share (in dollars per share)	$ 0.44	$ 0.78	$ 0.04	$ 1.57