FAIR VALUE DISCLOSURES (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Transfers of assets and liabilities between Level 1 and Level 2	$ 0
Recurring basis \| Estimated Fair Value
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Cash flow hedge swap agreements	(13,657)
Recurring basis \| Significant Other Observable Inputs (Level 2)
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Cash flow hedge swap agreements	$ (13,657)

Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant