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Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 29, 2018
Dec. 30, 2017
Fair Value Measurements [Line Items]    
Fair value for the derivative liabilities $ 10.9 $ 1.2
Level 2    
Fair Value Measurements [Line Items]    
Fair value for the derivative liabilities $ (10.9) $ (1.2)