RENTAL INCOME (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
RENTAL INCOME
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%
Minimum future rental income
2016	$ 2,826,000
2017	2,205,000
2018	1,922,000
2019	1,442,000
2020	869,000
Thereafter	796,000
Commercial Property Leases	10,060,000
Aggregate contingent rentals from continuing operations	$ 683,000	$ 638,000	$ 670,000