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Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares
Dec. 24, 2017
Jun. 25, 2017
Statement Of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, shares authorized (in shares) 500,000,000 500,000,000
Common stock, shares issued (in shares) 18,290,935 18,229,777
Common stock, shares outstanding (in shares) 18,290,935 18,229,777