Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
NET SALES	$ 697,081	$ 594,105	$ 571,906
Cost of products sold	629,803	560,573	556,925
GROSS PROFIT	67,278	33,532	14,981
Selling, general and administrative	67,657	68,363	72,049
Restructuring charges	0	3,153	0
Interest	32,807	34,835	47,583
Loss on debt retirements	0	0	29,619
Other income	(8,926)	(73,106)	(20,921)
TOTAL EXPENSES	91,538	33,245	128,330
INCOME (LOSS) BEFORE INCOME TAXES FROM CONTINUING OPERATIONS	(24,260)	287	(113,349)
Income taxes (benefit)	(13,766)	(1,641)	(43,877)
NET INCOME (LOSS) FROM CONTINUING OPERATIONS	(10,494)	1,928	(69,472)
NET INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	35,044	5,548	4,559
NET INCOME (LOSS)	$ 24,550	$ 7,476	$ (64,913)
NET INCOME (LOSS) PER SHARE FROM CONTINUING OPERATIONS:
Basic (in USD per share)	$ (0.37)	$ 0.07	$ (2.49)
Diluted (in USD per share)	$ (0.37)	$ 0.07	$ (2.49)
NET INCOME FROM DISCONTINUED OPERATIONS:
Basic (in USD per share)	$ 1.24	$ 0.20	$ 0.16
Diluted (in USD per share)	$ 1.24	$ 0.20	$ 0.16
NET INCOME (LOSS) PER SHARE:
Basic (in USD per share)	$ 0.87	$ 0.27	$ (2.33)
Diluted (in USD per share)	$ 0.87	$ 0.27	$ (2.33)
AVERAGE SHARES OUTSTANDING
Basic (in shares)	28,163	27,914	27,825
Diluted (in shares)	28,163	28,016	27,825