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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2021
Revenue from Contract with Customer [Abstract] |
Summary of Revenues Disaggregated by End Market and Product |
| Three months ended June 30, |  | Six months ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Residential new construction | $ | 373,883 |  |  | 77 | % |  | $ | 298,321 |  |  | 76 | % |  | $ | 705,069 |  |  | 76 | % |  | $ | 596,661 |  |  | 75 | %
Repair and remodel | 30,776 |  |  | 6 | % |  | 23,034 |  |  | 6 | % |  | 59,636 |  |  | 7 | % |  | 47,077 |  |  | 6 | %
Commercial | 83,439 |  |  | 17 | % |  | 72,584 |  |  | 18 | % |  | 160,459 |  |  | 17 | % |  | 147,532 |  |  | 19 | %
Net revenues | $ | 488,098 |  |  | 100 | % |  | $ | 393,939 |  |  | 100 | % |  | $ | 925,164 |  |  | 100 | % |  | $ | 791,270 |  |  | 100 | %
| Three months ended June 30, |  | Six months ended June 30, |
| 2021 |  | 2020 |  | 2021 |  | 2020 |  |  |
Insulation | $ | 313,365 |  |  | 64 | % |  | $ | 251,052 |  |  | 64 | % |  | $ | 596,820 |  |  | 65 | % |  | $ | 510,753 |  |  | 64 | % |  |  |  |  |  |  |
Waterproofing | 34,264 |  |  | 7 | % |  | 28,078 |  |  | 7 | % |  | 64,213 |  |  | 7 | % |  | 56,583 |  |  | 7 | % |  |  |  |  |  |  |
Shower doors, shelving and mirrors | 34,986 |  |  | 7 | % |  | 28,902 |  |  | 7 | % |  | 66,419 |  |  | 7 | % |  | 55,917 |  |  | 7 | % |  |  |  |  |  |  |
Garage doors | 26,044 |  |  | 5 | % |  | 21,667 |  |  | 6 | % |  | 50,483 |  |  | 5 | % |  | 44,654 |  |  | 6 | % |  |  |  |  |  |  |
Rain gutters | 21,460 |  |  | 4 | % |  | 13,071 |  |  | 3 | % |  | 40,464 |  |  | 4 | % |  | 24,647 |  |  | 3 | % |  |  |  |  |  |  |
Fireproofing/firestopping(1) | 13,036 |  |  | 3 | % |  | 13,537 |  |  | 3 | % |  | 25,472 |  |  | 3 | % |  | 25,279 |  |  | 3 | % |  |  |  |  |  |  |
Window blinds | 12,667 |  |  | 3 | % |  | 11,554 |  |  | 3 | % |  | 24,201 |  |  | 3 | % |  | 22,485 |  |  | 3 | % |  |  |  |  |  |  |
Other building products | 32,276 |  |  | 7 | % |  | 26,078 |  |  | 7 | % |  | 57,092 |  |  | 6 | % |  | 50,952 |  |  | 7 | % |  |  |  |  |  |  |
Net revenues | $ | 488,098 |  |  | 100 | % |  | $ | 393,939 |  |  | 100 | % |  | $ | 925,164 |  |  | 100 | % |  | $ | 791,270 |  |  | 100 | % |  |  |  |  |  |  |
(1)Combined with "Other building products" in previous years.
Summary of Assets and Liabilities Related to Uncompleted Contracts and Customer Deposits | Contract assets and liabilities related to our uncompleted contracts and customer deposits were as follows (in thousands):
| June 30, 2021 |  | December 31, 2020
Contract assets | $ | 28,370 |  |  | $ | 24,334 |
Contract liabilities | (10,305) |  |  | (8,965) |
Schedule of Cost and Estimated Earnings on Uncompleted Contracts | Uncompleted contracts were as follows (in thousands):
| June 30, 2021 |  | December 31, 2020
Costs incurred on uncompleted contracts | $ | 216,067 |  |  | $ | 169,544 |
Estimated earnings | 107,440 |  |  | 90,737 |
Total | 323,507 |  |  | 260,281 |
Less: Billings to date | 299,878 |  |  | 240,665 |
Net under billings | $ | 23,629 |  |  | $ | 19,616 |
Schedule of Net Under Billings | Net under billings were as follows (in thousands):
| June 30, 2021 |  | December 31, 2020
Costs and estimated earnings in excess of billings on uncompleted contracts (contract assets) | $ | 28,370 |  |  | $ | 24,334 |
Billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities) | (4,741) |  |  | (4,718) |
Net under billings | $ | 23,629 |  |  | $ | 19,616 |

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