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Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jul. 01, 2018 | Jun. 30, 2019 | Jul. 01, 2018
Cash dividend per share | $ 0.25 | $ 0.25 | $ 0.50 | $ 0.50
Class B Common Stock [Member] |  |  |  |
Cash dividend per share | $ 0.25 | $ 0.25 | $ 0.50 | $ 0.50
Class B common stock shares issued |  |  | 19,224 | 20,296

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