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Net Sales - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Revenue From Contract With Customer [Abstract]          
Revenue, remaining performance obligation, expected timing of satisfaction, description     contracts have an original expected duration of one year or less, for our contracts with a duration greater than one year, the average remaining expected duration was approximately 14 months    
Average revenue remaining performance obligation expected timing of satisfaction period     14 months    
Contract liabilities $ 3.8   $ 3.8   $ 7.0
Contract with customer, liability partially offset revenue recognized $ 1.2 $ 0.8 $ 3.2 $ 4.1