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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS        
Income tax (benefit) provision $ 0 $ (46) $ 1,255 $ 268