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v3.19.1

Quarterly Results (unaudited) - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |
Pre-tax impairment loss |  |  | $ 220,265,000 | $ 0 | $ 0
Pre-tax expense related to settlement agreement |  |  | $ 1,800,000 | $ 45,098,000 |
Personnel related expenses |  | $ 4,000,000 |  |  |
Homebuilder Settlement Agreement [Member] |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |
Pre-tax expense related to settlement agreement |  | $ 6,000,000 |  |  |
Oil and Gas Proppants [Member] |  |  |  |  |
Effect Of Fourth Quarter Events [Line Items] |  |  |  |  |
Pre-tax impairment loss | $ 220,300,000 |  |  |  |

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