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Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Nov. 30, 2013
Dec. 01, 2012
Nov. 30, 2013
Dec. 01, 2012
Discontinued Operations [Line Items]        
Document Period End Date     Nov. 30, 2013  
Net sales $ 178 $ 278 $ 264 $ 499
Gross profit (loss) (55) (128) (103) (221)
Selling, general, and administrative expenses 117 201 149 266
Additional gain on sale 0 1 1 1
Income tax provision (benefit) (65) (127) (135) (198)
Income (loss) from discontinued operations, net of tax $ (107) $ (203) $ (118) $ (290)