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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 30, 2019
Dec. 31, 2018
Condensed Consolidated Balance Sheets    
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, authorized shares 1,250,000 1,250,000
Common stock, issued shares 1,165,821 1,169,217
Common stock, outstanding shares 1,165,821 1,169,217