Note 2 - Business Combinations (Tables)

6 Months Ended

Nov. 30, 2013

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information [Table Text Block]

	Three Months Ended						Six Months Ended
	November 30						November 30
	2013			2012			2013			2012
Net sales	$	100,203			93,510			196,247			189,762
Net loss		(787	)		(10,416	)		(8,547	)		(22,022	)