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INTEREST EXPENSE (Details) (USD $)	12 Months Ended
INTEREST EXPENSE (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Debt Instrument [Line Items]
Amortization of deferred financing costs	$ 653,000	$ 653,000	$ 653,000
Credit Facility [Member]
Debt Instrument [Line Items]
Margin added to LIBOR, lower range (in hundredths)	0.70%
Margin added to LIBOR, upper range (in hundredths)	1.20%
Amortization of deferred financing costs	653,000	653,000	653,000
Deferred financing costs	$ 1,100,000	$ 1,800,000

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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