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Organization and Nature of Business (Detail) $ in Thousands, T in Millions	Mar. 04, 2022 USD ($)	Sep. 18, 2020 USD ($)	Dec. 31, 2022 T
Business Acquisition [Line Items]
Processing capacity			5.5
Blair
Business Acquisition [Line Items]
Base price consideration | $	$ 6,450
Eagle Materials Holdings
Business Acquisition [Line Items]
Processing capacity			3.5
Base price consideration | $		$ 2,000
Eagle Materials Holdings | BNSF [Member]
Business Acquisition [Line Items]
Processing capacity			1.6

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Current annual processing capacity.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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