Business Combinations	12 Months Ended
Dec. 31, 2020
Business Combinations [Abstract]
Business Combinations	Note D: Business Combinations In August 2020, the Company acquired certain assets, including a sand and gravel plant and four ready mixed concrete operations. This acquisition provides customer expansion in the Dallas/Fort Worth, Texas market and the ability to internally source ready mixed concrete raw materials from the Company’s legacy aggregates and cement operations. The Company determined fair values of the assets acquired and liabilities assumed. As of December 31, 2020, the measurement period is closed. The impact of this acquisition is not material to the Company’s operating results; therefore, pro-forma financial information is not included.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-URI http://asc.fasb.org/topic&trid=2303972

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