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Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Interest paid | $ 913 | $ 1,844 | $ 4,341
Income taxes net of refunds | 124,984 | 70,889 | 70,095
N&S Supply of Fishkill, Inc |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Business combination shares issued | 0 | $ (161) | 4,032
Peirce-Phelps, Inc. |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Business combination shares issued | 0 |  | 58,344
Dunphey & Associates Supply Co., Inc. |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Business combination shares issued | 0 |  | 6,891
Acme Refrigeration of Baton Rouge LLC |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Business combination shares issued | 2,551 |  | 0
Makdad Industrial Supply Co., Inc |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |
Business combination shares issued | $ 997 |  | $ 0

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