Revenue From Contracts With Customers - Summary of Disaggregated Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 194,551	$ 166,380	$ 580,575	$ 544,279
Products Transferred at a Point in Time and Variable Consideration Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	182,775	146,998	541,722	491,399
Products Transferred Over Time and Fixed Price Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	11,776	19,382	38,853	52,880
Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	182,775	146,998	541,722	491,399
Residential [Member] | Products Transferred at a Point in Time and Variable Consideration Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	182,775	146,998	541,722	491,399
Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	11,776	19,382	38,853	52,880
Commercial [Member] | Products Transferred Over Time and Fixed Price Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 11,776	$ 19,382	$ 38,853	$ 52,880