Schedule of Inventories (Detail) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Mar. 31, 2019 |
---|---|---|
Inventory [Line Items] | ||
Inventories | $ 263,612 | $ 275,194 |
Raw Materials and Material-in-Progress [Member] | ||
Inventory [Line Items] | ||
Inventories | 119,212 | 125,828 |
Finished Cement [Member] | ||
Inventory [Line Items] | ||
Inventories | 27,000 | 27,826 |
Aggregates [Member] | ||
Inventory [Line Items] | ||
Inventories | 7,758 | 7,351 |
Gypsum Wallboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 6,124 | 7,124 |
Paperboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 13,281 | 15,660 |
Frac Sand [Member] | ||
Inventory [Line Items] | ||
Inventories | 3,666 | 2,557 |
Repair Parts and Supplies [Member] | ||
Inventory [Line Items] | ||
Inventories | 77,735 | 80,676 |
Fuel and Coal [Member] | ||
Inventory [Line Items] | ||
Inventories | $ 8,836 | $ 8,172 |