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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Cash dividend per share $ 1.00 $ 1.00 $ 1.00
Class B Common Stock [Member]      
Cash dividend per share $ 1.00 $ 1.00 $ 1.00
Class B common stock shares issued 19,224 20,296 21,020