Schedule of Inventories (Detail) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Mar. 31, 2018 |
---|---|---|
Inventory [Line Items] | ||
Inventories | $ 275,194 | $ 258,159 |
Raw Materials and Material-in-Progress [Member] | ||
Inventory [Line Items] | ||
Inventories | 125,828 | 121,628 |
Finished Cement [Member] | ||
Inventory [Line Items] | ||
Inventories | 27,826 | 24,089 |
Aggregates [Member] | ||
Inventory [Line Items] | ||
Inventories | 7,351 | 7,787 |
Gypsum Wallboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 7,124 | 8,477 |
Paperboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 15,660 | 8,602 |
Frac Sand [Member] | ||
Inventory [Line Items] | ||
Inventories | 2,557 | 1,696 |
Repair Parts and Supplies [Member] | ||
Inventory [Line Items] | ||
Inventories | 80,676 | 79,878 |
Fuel and Coal [Member] | ||
Inventory [Line Items] | ||
Inventories | $ 8,172 | $ 6,002 |