v3.8.0.1
Fair Value Measurement - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 24, 2017
Sep. 25, 2016
Sep. 24, 2017
Sep. 25, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Impairment charge $ 1.5 $ 1.9 $ 5.8 $ 2.9
Hurricane Harvey [Member]        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Impairment charge 0.7   0.7  
Insurance recoveries $ 0.7   $ 0.7