CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $)	3 Months Ended		6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Income Statement [Abstract]
Net Sales	$ 312,161,000	$ 336,628,000	$ 552,204,000	$ 568,755,000
Costs and Expenses:
Cost of Product Sold	295,357,000	314,249,000	518,404,000	526,696,000
Selling and Administrative	16,203,000	15,856,000	31,922,000	31,775,000
Plant Restructuring	0	347,000	0	501,000
Other Operating Income	(85,000)	(607,000)	194,000	(788,000)
Total Costs and Expenses	311,475,000	329,845,000	550,520,000	558,184,000
Operating Income (Loss)	686,000	6,783,000	1,684,000	10,571,000
Interest Expense, Net	1,417,000	1,548,000	2,486,000	3,375,000
Earnings From Equity Investment	(80,000)		286,000
Earnings (Loss) Before Income Taxes	(811,000)	5,235,000	(516,000)	7,196,000
Income Taxes Expense (Benefit)	(233,000)	(1,368,000)	169,000	(754,000)
Net Earnings (Loss)	(578,000)	6,603,000	(685,000)	7,950,000
Earnings (Loss) Attributable to Common Stock	$ (576,000)	$ 6,387,000	$ (684,000)	$ 7,685,000
Basic Earnings (Loss) per Common Share	$ (0.05)	$ 0.59	$ (0.06)	$ 0.71
Diluted Earnings (Loss) per Common Share	$ (0.05)	$ 0.59	$ (0.06)	$ 0.71