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Acquisitions - Unaudited Pro Forma Financial Information (Detail) - Legacy Primo Acquisition - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Business Acquisition [Line Items]    
Revenue $ 514.7 $ 486.9
Net loss from continuing operations (13.0) (36.9)
Net income (loss) $ 17.9 $ (33.9)
Net loss per common share from continuing operations, diluted (in USD per share) $ (0.09) $ (0.23)
Net income (loss) per common share, diluted (in USD per share) $ 0.13 $ (0.21)