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Organization - Summary of Annual Percentage of Installation Net Revenue by Product Category (Detail) - Customer Concentration Risk [Member] - Revenue [Member] | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 100.00% | 100.00% | 100.00%
Insulation [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 66.00% | 67.00% | 77.00%
Waterproofing [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 7.00% | 8.00% | 2.00%
Shower Doors, Shelving and Mirrors [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 7.00% | 7.00% | 5.00%
Garage Doors [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 6.00% | 5.00% | 6.00%
Rain Gutters [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 3.00% | 4.00% | 4.00%
Blinds [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 2.00% | 2.00% | 1.00%
Other Building Products [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Net revenues percentage | 9.00% | 7.00% | 5.00%

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