RENTAL INCOME (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 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	$ 3,447,000
2018	2,284,000
2019	1,687,000
2020	1,474,000
2021	594,000
Thereafter	391,000
Commercial Property Leases	9,877,000
Aggregate contingent rentals from continuing operations	$ 319,000	$ 304,000