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Revenue - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]    
Payment term on product sales range, description Payment terms on our product sales normally range from 30 to 90 days.  
Other current liabilities [Member]    
Disaggregation of Revenue [Line Items]    
Refund obligation $ 30.5 $ 16.9
Other Current Assets [Member]    
Disaggregation of Revenue [Line Items]    
Contract with customer, right to recover product, current $ 2.9 $ 2.6