Condensed Consolidated Statements of Net (Loss) Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Net Sales	$ 338,470	$ 352,606	$ 627,397	$ 624,741
Costs and Expenses:
Cost of Product Sold	321,059	321,581	594,451	571,761
Selling, General and Administrative	18,865	18,702	36,318	35,907
Plant Restructuring (Credit) Charge	(25)	277	56	1,462
Other Operating (Income) Loss	(20)	31	(2,632)	19
Total Costs and Expenses	339,879	340,591	628,193	609,149
Operating Income	(1,409)	12,015	(796)	15,592
Loss (Earnings) From Equity Investment		270	(21)	(167)
Interest Expense, Net	3,433	2,151	6,650	4,295
(Loss) Earnings Before Income Taxes	(4,842)	9,594	(7,425)	11,464
Income Taxes (Benefit) Expense	(1,884)	2,773	(3,487)	3,678
Net (Loss) Earnings	(2,958)	6,821	(3,938)	7,786
(Loss) Earnings Applicable to Common Stock	$ (2,952)	$ 6,753	$ (3,928)	$ 7,703
Basic (Loss) Earnings per Common Share (in dollars per share)	$ (0.30)	$ 0.69	$ (0.40)	$ 0.79
Diluted (Loss) Earnings per Common Share (in dollars per share)	$ (0.30)	$ 0.69	$ (0.40)	$ 0.78