Schedule of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Inventory [Line Items]
Inventories	$ 236,661	$ 235,749
Raw Materials and Material-in-Progress [Member]
Inventory [Line Items]
Inventories	81,308	92,696
Finished Cement [Member]
Inventory [Line Items]
Inventories	38,769	34,362
Aggregates [Member]
Inventory [Line Items]
Inventories	3,558	2,933
Gypsum Wallboard [Member]
Inventory [Line Items]
Inventories	3,452	4,177
Paperboard [Member]
Inventory [Line Items]
Inventories	7,462	5,031
Repair Parts and Supplies [Member]
Inventory [Line Items]
Inventories	91,593	86,750
Fuel and Coal [Member]
Inventory [Line Items]
Inventories	$ 10,519	$ 9,800