Schedule of Inventories (Detail) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Mar. 31, 2016 |
---|---|---|
Inventory [Line Items] | ||
Inventories | $ 222,783 | $ 243,595 |
Raw Materials and Material-in-Progress [Member] | ||
Inventory [Line Items] | ||
Inventories | 104,173 | 119,060 |
Finished Cement [Member] | ||
Inventory [Line Items] | ||
Inventories | 18,963 | 21,834 |
Gypsum Wallboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 6,944 | 5,839 |
Frac Sand [Member] | ||
Inventory [Line Items] | ||
Inventories | 3,847 | 5,501 |
Aggregates [Member] | ||
Inventory [Line Items] | ||
Inventories | 7,510 | 10,660 |
Paperboard [Member] | ||
Inventory [Line Items] | ||
Inventories | 4,818 | 7,575 |
Repair Parts and Supplies [Member] | ||
Inventory [Line Items] | ||
Inventories | 70,986 | 68,155 |
Fuel and Coal [Member] | ||
Inventory [Line Items] | ||
Inventories | $ 5,542 | $ 4,971 |