RENTAL INCOME (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
RENTAL INCOME
Percentage of rental income related to residential apartments and condominium units with leases of one year or less	93.00%
Maximum period of non-cancelable operating lease	1 year
Percentage of rental income related to commercial properties	7.00%
Minimum future rental income
2017	$ 2,675,000
2018	2,382,000
2019	1,840,000
2020	1,508,000
2021	871,000
Thereafter	474,000
Commercial Property Leases	9,750,000
Aggregate contingent rentals from continuing operations	$ 166,000	$ 158,000