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Quarterly Results (unaudited) - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Pre-tax impairment loss |  |  |  |  | $ 224,267 | $ 220,265
Corporate, general and administrative expense |  |  |  | $ 49,511 | 65,410 | 37,371
Cost of good sold |  |  |  | 1,214,287 | 1,061,367 | 962,152
Income tax expense (benefit) |  |  |  | $ 89,946 | 24,504 | 60,272
Cares Act [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Income tax expense (benefit) |  | $ 31,700 |  |  |  |
Business Development and Separation Costs [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Corporate, general and administrative expense |  | 6,500 |  |  |  |
Outage And Purchase Accounting Costs [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Cost of good sold |  | 6,800 |  |  |  |
Plant Expansion Costs [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Cost of good sold |  | $ 3,000 |  |  |  |
Cement [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Additional cement costs | $ 6,000 |  |  |  |  |
Light Materials [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Additional cement costs | $ 6,000 |  |  |  |  |
Oil and Gas Proppants [Member] |  |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |  |
Pre-tax impairment loss |  |  | $ 25,100 |  | $ 224,300 | $ 220,300

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