Note 2 - Business Combinations (Tables)

9 Months Ended

Feb. 28, 2014

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information [Table Text Block]

	Three Months Ended						Nine Months Ended
	February 28						February 28
	2014			2013			2014			2013
Net sales	$	90,979			97,922			287,226			287,684
Net loss		(7,355	)		(6,240	)		(15,902	)		(28,262	)