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Business Segments (Narrative) (Details) - segment	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting [Abstract]
Number of reportable segments			3
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments			3
Revenue Benchmark | Customer Concentration Risk | Civil, Building, And Specialty Contractors | Customer One
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	14.40%	16.90%	15.10%	18.20%
Revenue Benchmark | Customer Concentration Risk | Civil, Building, And Specialty Contractors | Customer Two
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	10.10%		10.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

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