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Balance Sheets (Unaudited) 2 (Parentheticals) - $ / shares
Jun. 26, 2021
Dec. 26, 2020
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized shares (in shares) 20,000,000 20,000,000
Common stock, issued shares (in shares) 14,300,771 13,746,242
Common stock, outstanding shares (in shares) 14,300,548 13,313,790
Treasury stock, shares (in shares) 223 432,452