Note 22 - Selected Quarterly Financial Data (unaudited) (Detail) - Selected Quarterly Financial Data (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended								9 Months Ended	12 Months Ended
	May 31, 2012	Feb. 29, 2012	Nov. 30, 2011	Aug. 19, 2011	May 31, 2011	Feb. 28, 2011	Nov. 30, 2010	Aug. 31, 2010	May 31, 2012	Aug. 31, 2012	May 31, 2011	May 31, 2010
Predecessor
Net Sales	$ 86,019	$ 81,370	$ 83,035	$ 74,910	$ 84,555	$ 83,349	$ 81,546	$ 83,641	$ 261,814	$ 11,390	$ 333,091	$ 329,073
Gross Profit	58,491	52,782	40,609	51,955	59,845	59,019	58,385	59,667	156,116	4,234	236,916	233,724
Income (Loss) from Operations	11,553	9,113	(24,713)	(6,508)	27,971	33,867	31,957	32,202	(4,599)	(552)	125,997	125,342
Net Income (Loss)	$ (7,895)	$ (9,131)	$ (30,179)	$ (6,374)	$ 24,159	$ 22,686	$ 21,063	$ 21,419	$ (49,647)	$ (2,442)	$ 89,327	$ 82,583