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Business Combinations - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Business Acquisition [Line Items] |  |
Accounts receivable | $ 10,237 | $ 2,050
Inventories | 1,596 | 1,352
Other current assets | 587 | 3
Property and equipment | 4,065 | 1,891
Intangibles | 22,146 | 12,364
Goodwill | 11,250 | 11,332
Other non-current assets | 74 | 174
Accounts payable and other current liabilities | (3,966) | (104)
Deferred income tax liabilities | (35) |
Other long-term liabilities | (164) |
Fair value of assets acquired and purchase price | 45,790 | 29,062
Less seller obligations | 6,965 | 4,322
Cash paid | 38,825 | 24,740
Royals [Member] |  |
Business Acquisition [Line Items] |  |
Accounts receivable | 2,848 |
Inventories | 305 |
Other current assets | 430 |
Property and equipment | 598 |
Intangibles | 3,930 |
Goodwill | 3,015 |
Other non-current assets | 58 |
Accounts payable and other current liabilities | (1,059) |
Deferred income tax liabilities | (35) |
Fair value of assets acquired and purchase price | 10,090 |
Less seller obligations | 2,500 |
Cash paid | 7,590 |
First State Insulation [Member] |  |
Business Acquisition [Line Items] |  |
Inventories |  | 291
Property and equipment |  | 989
Intangibles |  | 3,382
Goodwill |  | 1,857
Accounts payable and other current liabilities |  | (39)
Fair value of assets acquired and purchase price |  | 6,480
Less seller obligations |  | 1,355
Cash paid |  | 5,125
Other Acquisition [Member] |  |
Business Acquisition [Line Items] |  |
Accounts receivable | 1,370 | 254
Inventories | 278 | 338
Other current assets | 145 | 3
Property and equipment | 350 | 667
Intangibles | 2,996 | 2,242
Goodwill | 1,745 | 930
Other non-current assets | 16 | 13
Accounts payable and other current liabilities | (196) | (23)
Other long-term liabilities | (131) |
Fair value of assets acquired and purchase price | 6,573 | 4,424
Less seller obligations | 1,538 | 974
Cash paid | 5,035 | 3,450
Expert Insulation [Member] |  |
Business Acquisition [Line Items] |  |
Accounts receivable |  | 1,796
Inventories |  | 723
Property and equipment |  | 235
Intangibles |  | 6,740
Goodwill |  | 8,545
Other non-current assets |  | 161
Accounts payable and other current liabilities |  | (42)
Fair value of assets acquired and purchase price |  | 18,158
Less seller obligations |  | 1,993
Cash paid |  | $ 16,165
Energy One [Member] |  |
Business Acquisition [Line Items] |  |
Accounts receivable | 3,657 |
Inventories | 838 |
Other current assets | 12 |
Property and equipment | 2,319 |
Intangibles | 6,500 |
Goodwill | 2,859 |
Accounts payable and other current liabilities | (1,375) |
Other long-term liabilities | (19) |
Fair value of assets acquired and purchase price | 14,791 |
Less seller obligations | 1,591 |
Cash paid | 13,200 |
Storm Master [Member] |  |
Business Acquisition [Line Items] |  |
Accounts receivable | 2,362 |
Inventories | 175 |
Property and equipment | 798 |
Intangibles | 8,720 |
Goodwill | 3,631 |
Accounts payable and other current liabilities | (1,336) |
Other long-term liabilities | (14) |
Fair value of assets acquired and purchase price | 14,336 |
Less seller obligations | 1,336 |
Cash paid | $ 13,000 |

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