Quarterly report pursuant to Section 13 or 15(d)

Consolidated Condensed Statements of Stockholders' Equity Statements of Stockholders' Equity (Parenthetical)

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Consolidated Condensed Statements of Stockholders' Equity Statements of Stockholders' Equity (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 25, 2021
Sep. 26, 2020
Sep. 25, 2021
Sep. 26, 2020
Retained Earnings        
Common Stock, Dividends, Per Share, Declared $ 0.70 $ 0.66 $ 1.39 $ 1.32