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Schedule of Inventories (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Mar. 31, 2022
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Inventory [Line Items] |  |
Inventories | $ 225,835 | $ 236,661
Raw Materials and Material-in-Progress [Member] |  |
Inventory [Line Items] |  |
Inventories | 72,610 | 81,308
Finished Cement [Member] |  |
Inventory [Line Items] |  |
Inventories | 26,671 | 38,769
Aggregates [Member] |  |
Inventory [Line Items] |  |
Inventories | 6,753 | 3,558
Gypsum Wallboard [Member] |  |
Inventory [Line Items] |  |
Inventories | 3,357 | 3,452
Paperboard [Member] |  |
Inventory [Line Items] |  |
Inventories | 5,371 | 7,462
Repair Parts and Supplies [Member] |  |
Inventory [Line Items] |  |
Inventories | 98,547 | 91,593
Fuel and Coal [Member] |  |
Inventory [Line Items] |  |
Inventories | $ 12,526 | $ 10,519

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