SEGMENT REPORTING (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) state segment mi	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Number of operating segments \| segment	4
Number of reportable segments \| segment	4
Radius for delivering product, minimum \| mi	20
Radius for delivering product, maximum \| mi	25
Aggregates [Member]
Number Of States In Which Segments Serve \| state	20
Number Of Additional States Served \| state	2
Equity method investments	$ 22,965	$ 22,967	$ 22,924
Asphalt Mix [Member]
Number Of States In Which Segments Serve \| state	4
Percentage of product weight attributable to Aggregates	95.00%
Concrete [Member]
Number Of States In Which Segments Serve \| state	6
Percentage of product weight attributable to Aggregates	80.00%
United States [Member]
Revenues	$ 3,579,427	3,410,773	2,979,470
Nondomestic [Member]
Long-lived assets	188,652	160,125	139,427
Nondomestic [Member] \| Aggregates [Member]
Product sales	13,240	11,408	14,699
Nondomestic [Member] \| Asphalt Mix, Concrete And Calcium [Member]
Product sales	$ 0	$ 0	$ 0

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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