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FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Quoted Prices in Active Markets (Level 1) |  |
Fair value measurements |  |
Assets measured at fair value | $ 2,779 | $ 3,847
Quoted Prices in Active Markets (Level 1) | Money market funds |  |
Fair value measurements |  |
Assets measured at fair value | 2,779 | 3,847
Significant Other Observable Inputs (Level 2) |  |
Fair value measurements |  |
Assets measured at fair value | 3,360 | 3,366
Liabilities measured at fair value | 11,037 | 11,337
Significant Other Observable Inputs (Level 2) | Interest rate derivative |  |
Fair value measurements |  |
Liabilities measured at fair value | 11,037 | 11,337
Significant Other Observable Inputs (Level 2) | Certificates of deposit |  |
Fair value measurements |  |
Assets measured at fair value | 3,360 | 3,366
Total |  |
Fair value measurements |  |
Assets measured at fair value | 6,139 | 7,213
Liabilities measured at fair value | 11,037 | 11,337
Total | Interest rate derivative |  |
Fair value measurements |  |
Liabilities measured at fair value | 11,037 | 11,337
Total | Certificates of deposit |  |
Fair value measurements |  |
Assets measured at fair value | 3,360 | 3,366
Total | Money market funds |  |
Fair value measurements |  |
Assets measured at fair value | $ 2,779 | $ 3,847

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- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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