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Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Inventory [Line Items]
Inventories	$ 302,525	$ 291,882
Raw Materials and Material-in-Progress [Member]
Inventory [Line Items]
Inventories	98,997	96,880
Finished Cement [Member]
Inventory [Line Items]
Inventories	51,122	46,364
Aggregates [Member]
Inventory [Line Items]
Inventories	10,933	8,309
Gypsum Wallboard [Member]
Inventory [Line Items]
Inventories	5,200	4,244
Paperboard [Member]
Inventory [Line Items]
Inventories	8,282	8,651
Repair Parts and Supplies [Member]
Inventory [Line Items]
Inventories	110,962	112,885
Fuel and Coal [Member]
Inventory [Line Items]
Inventories	$ 17,029	$ 14,549

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No definition available.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6))
-Publisher FASB
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