Revenue From Contracts With Customers - Summary of Disaggregated Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 164,772	$ 194,551	$ 206,453	$ 179,571	$ 139,971	$ 166,380	$ 206,692	$ 171,207	$ 745,347	$ 684,250	$ 565,153
Products Transferred at a Point in Time and Variable Consideration Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									694,267	613,229	543,346
Products Transferred Over Time and Fixed Price Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									51,080	71,021	21,807
Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									694,267	613,229	543,346
Residential [Member] | Products Transferred at a Point in Time and Variable Consideration Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									694,267	613,229	543,346
Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									51,080	71,021	21,807
Commercial [Member] | Products Transferred Over Time and Fixed Price Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customers									$ 51,080	$ 71,021	$ 21,807