RENTAL INCOME (Details)	9 Months Ended
	Sep. 30, 2015 USD ($) ft² item	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Minimum future rental income
2016	$ 2,811,000
2017	2,285,000
2018	2,003,000
2019	1,574,000
2020	936,000
Thereafter	997,000
Commercial Property Leases	10,606,000
Annual base rent for expiring leases	$ 2,892,911
Total square feet for expiring leases | ft²	108,043
Total number of leases expiring | item	44
Percentage of annual base rent for expiring leases	100.00%
Allowance for doubtful rent receivable	$ 524,000		$ 366,000
Recognizing rental income from non-cancelable commercial leases with future rental increases on a straight-line basis	157,000
Deferred rental concession	111,000
Amortization of deferred rents	$ 1,600
Percentage of rental income related to residential apartments and condominium units with leases of one year or less	92.00%
Maximum period of non-cancelable operating lease	1 year
Percentage of rental income related to commercial properties	8.00%
Aggregate contingent rentals from continuing operations	$ 521,000	$ 532,000
Through September 30 2016
Minimum future rental income
Annual base rent for expiring leases	$ 123,679
Total square feet for expiring leases | ft²	6,646
Total number of leases expiring | item	8
Percentage of annual base rent for expiring leases	4.00%
Through September 30, 2017
Minimum future rental income
Annual base rent for expiring leases	$ 576,040
Total square feet for expiring leases | ft²	20,023
Total number of leases expiring | item	9
Percentage of annual base rent for expiring leases	20.00%
Through September 30, 2018
Minimum future rental income
Annual base rent for expiring leases	$ 402,653
Total square feet for expiring leases | ft²	12,357
Total number of leases expiring | item	8
Percentage of annual base rent for expiring leases	14.00%
Through September 30 2019
Minimum future rental income
Annual base rent for expiring leases	$ 650,019
Total square feet for expiring leases | ft²	23,321
Total number of leases expiring | item	10
Percentage of annual base rent for expiring leases	22.00%
Through September 30, 2020
Minimum future rental income
Annual base rent for expiring leases	$ 335,312
Total square feet for expiring leases | ft²	9,651
Total number of leases expiring | item	5
Percentage of annual base rent for expiring leases	12.00%
Through September 30, 2021
Minimum future rental income
Annual base rent for expiring leases	$ 647,765
Total square feet for expiring leases | ft²	31,274
Total number of leases expiring | item	3
Percentage of annual base rent for expiring leases	23.00%
Through September 30, 2024
Minimum future rental income
Annual base rent for expiring leases	$ 157,443
Total square feet for expiring leases | ft²	4,771
Total number of leases expiring | item	1
Percentage of annual base rent for expiring leases	5.00%