CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010
Income Statement [Abstract]
Net Sales	$ 283,616	$ 275,448	$ 542,699	$ 495,390
Costs and Expenses:
Cost of Product Sold	262,263	256,321	515,490	450,979
Selling and Administrative	15,409	13,854	31,513	29,093
Plant Restructuring	(15)	1,211	39	1,211
Other Operating Income	(18)	(8)	(169)	(84)
Total Costs and Expenses	277,639	271,378	546,873	481,199
Operating Income (Loss)	5,977	4,070	(4,174)	14,191
Interest Expense, Net	1,880	2,240	3,666	4,176
Earnings (Loss) Before Income Taxes	4,097	1,830	(7,840)	10,015
Income Taxes Expense (Benefit)	1,214	(981)	(2,748)	1,929
Net Earnings (Loss)	2,883	2,811	(5,092)	8,086
Earnings (Loss) Attributable to Common Stock	$ 2,779	$ 2,709	$ (4,930)	$ 7,571
Basic Earnings (Loss) per Common Share (Note 12)	$ 0.24	$ 0.23	$ (0.42)	$ 0.66
Diluted Earnings (Loss) per Common Share (Note 12)	$ 0.24	$ 0.23	$ (0.42)	$ 0.66