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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Jun. 27, 2020
Dec. 28, 2019
Statement Of Financial Position [Abstract]    
Receivables, allowances $ 1,966 $ 1,813
Common stock, par value $ 0 $ 0
Common stock, shares authorized 1,000,000,000 1,000,000,000
Common stock, shares issued 120,649,000 120,352,000
Treasury stock, shares 52,669,000 52,933,000