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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 03, 2017
Aug. 31, 2016
Earnings Per Share [Abstract]    
Net income $ 1,607 $ 744
Weighted average share outstanding:    
Basic 8,391,244 8,391,244
Common stock equivalents - treasury stock method 92,691 106,948
Diluted 8,483,935 8,498,192
Basic $ 0.19 $ 0.09
Diluted $ 0.19 $ 0.09