FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010	Oct. 01, 2010
FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract]
Repayment of mortgage loan			$ 8,770,000
Financial Assets
Cash and cash equivalents	100,000	137,000
Financial Liabilities
Mortgage notes payable	639,962,000	644,424,000
Notes payable to banks	108,745,000	91,294,000
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Financial Assets
Cash and cash equivalents	100,000	137,000
Mortgage loans receivable, net of discount	4,122,000	4,131,000
Financial Liabilities
Mortgage notes payable	639,962,000	644,424,000
Notes payable to banks	108,745,000	91,294,000
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial Assets
Cash and cash equivalents	100,000	137,000
Mortgage loans receivable, net of discount	4,251,000	4,199,000
Financial Liabilities
Mortgage notes payable	678,213,000	671,527,000
Notes payable to banks	$ 108,396,000	$ 89,818,000