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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Schedule Of Commitments And Contingencies [Line Items]    
Change in warranty reserve for disclosure purposes only $ 1.9 $ 1.9
Fire at Virginia Facility [Member] | Insurance Settlement [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Proceeds from the insurance recovery $ 3.7 $ 4.7
Minimum [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Warranty period   10 years
Maximum [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Warranty period   25 years
Surface Flaking Warranty Reserve [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Percentage change in warranty claims used as a threshold for disclosure   10.00%
Commercial Railing And Staging Systems [Member] | Commercial Use [Member] | Minimum [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Warranty period   1 year
Commercial Railing And Staging Systems [Member] | Commercial Use [Member] | Maximum [Member]    
Schedule Of Commitments And Contingencies [Line Items]    
Warranty period   3 years