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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Sep. 30, 2018
Dec. 30, 2017
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 20,000,000 20,000,000
Common stock, issued (in shares) 8,797,988 8,777,988
Common stock, outstanding (in shares) 8,797,988 8,777,988