Note 23 - Selected Quarterly Financial Data (Unaudited) (Details) - Quarterly Financial Data (USD $) In Thousands, unless otherwise specified	3 Months Ended									9 Months Ended	12 Months Ended
	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	Aug. 19, 2011	May 31, 2012	May 31, 2014	May 31, 2013
Quarterly Financial Data [Abstract]
Net Sales	$ 100,830	$ 90,979	$ 100,203	$ 96,044	$ 94,386	$ 86,192	$ 82,056	$ 85,154	$ 74,910	$ 261,814	$ 388,056	$ 347,788
Gross Margin	64,288	58,620	65,521	59,993	58,623	56,195	54,890	58,053	51,955	156,116	248,422	227,761
Income From Operations	(148,804)	8,834	20,030	9,990	1,659	12,844	8,299	13,942	(6,508)	(4,599)	(109,950)	36,744
Net Loss	$ (166,355)	$ (7,355)	$ (787)	$ (7,760)	$ (12,195)	$ (5,913)	$ (10,399)	$ (10,635)	$ (6,374)	$ (49,647)	$ (182,257)	$ (39,142)