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RENTAL INCOME (Details) (USD $)	9 Months Ended
	Sep. 30, 2012 squarefoot item	Sep. 30, 2011	Dec. 31, 2011
RENTAL INCOME
Percentage of rental income related to residential apartments and condominium units with leases of one year or less	90.00%
Maximum period of non-cancellable operating lease	1 year
Percentage of rental income related to commercial properties	10.00%
Minimum future rental income
2013	$ 2,453,000
2014	2,125,000
2015	1,601,000
2016	1,299,000
2017	508,000
Thereafter	828,000
Commercial Property Leases	8,814,000
Aggregate contingent rentals from continuing operations	477,000	461,000
RENTAL INCOME
Annual base rent for expiring leases	2,806,698
Total square feet for expiring leases	105,449
Total number of leases expiring	44
Percentage of annual base rent for expiring leases	100.00%
Allowance for doubtful rent receivable	563,000		448,000
Recognizing rental income from non-cancelable commercial leases with future rental increases on a straight-line basis	285,000
Deferred rental concession	14,000
Amortization of deferred rents	3,600
Through September 30, 2013
RENTAL INCOME
Annual base rent for expiring leases	518,465
Total square feet for expiring leases	19,182
Total number of leases expiring	10
Percentage of annual base rent for expiring leases	19.00%
Through September 30, 2014
RENTAL INCOME
Annual base rent for expiring leases	599,370
Total square feet for expiring leases	30,118
Total number of leases expiring	13
Percentage of annual base rent for expiring leases	21.00%
Through September 30, 2015
RENTAL INCOME
Annual base rent for expiring leases	146,240
Total square feet for expiring leases	6,415
Total number of leases expiring	5
Percentage of annual base rent for expiring leases	5.00%
Through September 30, 2016
RENTAL INCOME
Annual base rent for expiring leases	715,380
Total square feet for expiring leases	24,210
Total number of leases expiring	6
Percentage of annual base rent for expiring leases	26.00%
Through September 30, 2017
RENTAL INCOME
Annual base rent for expiring leases	497,412
Total square feet for expiring leases	16,818
Total number of leases expiring	6
Percentage of annual base rent for expiring leases	18.00%
Through September 30, 2019
RENTAL INCOME
Annual base rent for expiring leases	123,200
Total square feet for expiring leases	3,850
Total number of leases expiring	1
Percentage of annual base rent for expiring leases	4.00%
Through September 30, 2020
RENTAL INCOME
Annual base rent for expiring leases	141,831
Total square feet for expiring leases	3,056
Total number of leases expiring	2
Percentage of annual base rent for expiring leases	5.00%
Through September 30, 2021
RENTAL INCOME
Annual base rent for expiring leases	$ 64,800
Total square feet for expiring leases	1,800
Total number of leases expiring	1
Percentage of annual base rent for expiring leases	2.00%

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- Definition

Represents the amount of allowance for doubtful accounts related to rents receivable.

+ References

No definition available.

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Represents the amount resulting from recognizing rental income from non-cancelable commercial leases with future rental increases on a straight-line basis, which is included in rents receivable.

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- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

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Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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Amount of contingent rental revenue recognized for the period under lease, based on the occurrences of an event or condition.

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