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Revenue From Contracts With Customers - Summary of Disaggregated Net Sales (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | $ 179,571 | $ 171,207
Products Transferred at a Point in Time and Variable Consideration Contracts [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | 165,479 | 155,200
Products Transferred Over Time and Fixed Price Contracts [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | 14,092 | 16,007
Residential [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | 165,479 | 155,200
Residential [Member] | Products Transferred at a Point in Time and Variable Consideration Contracts [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | 165,479 | 155,200
Commercial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | 14,092 | 16,007
Commercial [Member] | Products Transferred Over Time and Fixed Price Contracts [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contract with customers | $ 14,092 | $ 16,007

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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