Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

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-Topic 220

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- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

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- Definition

Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 10

-Subparagraph i

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 6

-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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-Topic 815

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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-Paragraph 1B

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- Definition

Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

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

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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-Glossary Notional Amount

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income - unrealized loss on valuation of swap agreements	$ 3,300,000	$ 3,900,000
Cash Flow Hedging [Member] \| Fixed-Rate Derivatives, Maturing between November 2012 and December 2022 [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps (in interest rate swaps)	5
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	49,300,000
Cash Flow Hedging [Member] \| Variable-Rate Derivatives [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	75,000,000
Derivative, Number of Instruments Held	3
Cash Flow Hedging [Member] \| Variable-Rate Derivatives, Maturing in October 2012 [Member]
Derivatives, Fair Value [Line Items]
Derivative, Cap Interest Rate	3.00%
Cash Flow Hedging [Member] \| Variable-Rate Derivatives, Maturing in April 2013 [Member]
Derivatives, Fair Value [Line Items]
Derivative, Cap Interest Rate	6.00%
Cash Flow Hedging [Member] \| Variable-Rate Derivatives, Maturing in August 2013 [Member]
Derivatives, Fair Value [Line Items]
Derivative, Cap Interest Rate	3.50%
Minimum [Member] \| Cash Flow Hedging [Member] \| Fixed-Rate Derivatives, Maturing between November 2012 and December 2022 [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fixed Interest Rate	2.65%
Maximum [Member] \| Cash Flow Hedging [Member] \| Fixed-Rate Derivatives, Maturing between November 2012 and December 2022 [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fixed Interest Rate	3.79%
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivatives, Fair Value [Line Items]
Derivative financial instruments	$ 2,951,000	$ 3,500,000