Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2013	Sep. 01, 2012
Discontinued Operations [Line Items]
Document Period End Date	Aug. 31, 2013
Net sales	$ 86	$ 221
Gross profit (loss)	(49)	(93)
Selling, general, and administrative expenses	32	65
Income tax provision (benefit)	(70)	(71)
Income (loss) from discontinued operations, net of tax	$ (11)	$ (87)