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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Schedule Of Commitments And Contingencies [Line Items]  
Change in warranty reserve for disclosure purposes only $ 2.1
Fire at Virginia Facility [Member]  
Schedule Of Commitments And Contingencies [Line Items]  
Proceeds from the insurance recovery $ 0.0
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