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FAIR VALUE MEASUREMENTS (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2015 USD ($) item | Dec. 31, 2014 USD ($)
Fair value of financial assets and liabilities carried at fair value |  |
Aggregate carrying value of total debt | $ 1,200,000 | $ 1,200,000
Estimated fair value of total debt | $ 1,200,000 | 1,200,000
Interest rate swap |  |
Fair value of financial assets and liabilities carried at fair value |  |
Number of counterparties to derivative contracts who experienced significant downgrades in 2014 | item | 0 |
Level 2 |  |
Fair value of financial assets and liabilities carried at fair value |  |
Total liabilities at fair value | $ 7,848 | 8,299
Level 2 | Interest rate swap |  |
Fair value of financial assets and liabilities carried at fair value |  |
Derivative Liabilities | $ 7,848 | $ 8,299

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- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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