Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Parenthetical)

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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Dec. 26, 2015
Retained Earnings [Member]      
Cash dividends declared per common share (in dollars per share) $ 1.0775 $ 1.04 $ 0.96