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FAIR VALUE MEASUREMENTS Narrative (Details) (USD $)
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12 Months Ended | ||||||||||
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Jun. 30, 2014
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Dec. 31, 2013
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Jun. 30, 2014
Asphalt JV [Member]
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Dec. 31, 2013
Asphalt JV [Member]
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Jun. 30, 2014
Asphalt JV [Member]
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Feb. 26, 2014
Asphalt JV [Member]
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Jun. 30, 2014
Asphalt JV [Member]
Financial Guarantee [Member]
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Jun. 30, 2014
Recurring Fair Value Measurements
Fair Value Level 3
Contingent consideration [Member]
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Jun. 30, 2014
Nonrecurring Fair Value Measurements
Fair Value Level 3
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Dec. 31, 2013
Nonrecurring Fair Value Measurements
Fair Value Level 3
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Dec. 31, 2012
TexStar Asset Acquisition [Member]
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| Fair Value Inputs, Liabilities, Quantitative Information [Line Items] | |||||||||||
| Carrying amount, note receivable | $ 170,735,000 | ||||||||||
| Business Acquisition, Effective Date of Acquisition | Dec. 13, 2012 | ||||||||||
| Business Acquisition, Cost of Acquired Entity | 325,000,000 | ||||||||||
| Potential future payments, Range, Low | 0 | ||||||||||
| Potential future payments, Range, High | 1,300,000 | ||||||||||
| Guarantee liability | 2,000,000 | ||||||||||
| Amount of Guarantees Provided | 88,300,000 | ||||||||||
| Number of Guarantees with Unlimited Exposure | 2 | ||||||||||
| Assets held for sale | 6,420,000 | 21,987,000 | 6,400,000 | 22,000,000 | |||||||
| Term Loan Receivable | 190,000,000 | 190,000,000 | |||||||||
| Equity method losses in excess of investment | 21,300,000 | ||||||||||
| Equity Method Investments | $ 72,908,000 | $ 68,735,000 | $ 0 | ||||||||