Note 23 - Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

May 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

					Income
Fiscal Year	Net		Gross		from			Net
Ended	Sales		Margin		Operations			Loss
May 31, 2014
First Quarter	$	96,044		59,993		9,990			(7,760	)
Second Quarter		100,203		65,521		20,030			(787	)
Third Quarter		90,979		58,620		8,834			(7,355	)
Fourth Quarter		100,830		64,288		(148,804	)		(166,355	)
	$	388,056		248,422		(109,950	)		(182,257	)

					Income
Fiscal Year	Net		Gross		from		Net
Ended	Sales		Margin		Operations		Loss
May 31, 2013
First Quarter	$	85,154		58,053		13,942		(10,635	)
Second Quarter		82,056		54,890		8,299		(10,399	)
Third Quarter		86,192		56,195		12,844		(5,913	)
Fourth Quarter		94,386		58,623		1,659		(12,195	)
	$	347,788		227,761		36,744		(39,142	)