OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Rental and other property revenues	$ 33,505	$ 31,491	$ 96,194	$ 94,328
Property operating expenses	(15,867)	(15,157)	(45,814)	(46,256)
Depreciation and amortization	(6,891)	(6,326)	(19,859)	(19,008)
Segment operating (loss) income	5,771	5,766	15,600	16,804
Real estate assets	1,053,452		1,053,452
Commercial Properties [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	8,228	8,170	23,187	25,308
Property operating expenses	(4,236)	(4,252)	(12,222)	(13,629)
Depreciation and amortization	(2,523)	(2,298)	(7,138)	(6,903)
Mortgage and loan interest	(1,921)	(1,902)	(5,662)	(5,629)
Segment operating (loss) income	(452)	(282)	(1,835)	(853)
Capital expenditures	962	689	3,688	2,586
Real estate assets	134,148	145,321	134,148	145,321
Property Sales
Sales price			2,313
Cost of sale			(2,313)
Apartments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	25,275	23,231	73,001	68,922
Property operating expenses	(11,345)	(10,659)	(33,127)	(31,615)
Depreciation and amortization	(4,364)	(4,028)	(12,709)	(12,105)
Mortgage and loan interest	(5,722)	(5,168)	(16,520)	(16,955)
Recognition of deferred gain on sale of income - producing properties		9,841		9,841
Segment operating (loss) income	3,844	13,217	10,645	18,088
Capital expenditures		543	(2,398)	543
Real estate assets	825,863	665,972	825,863	665,972
Property Sales
Sales price			8,512
Cost of sale			(8,512)
Recognized prior deferred gain		9,841		9,841
Gain (loss) on sale		9,841		9,841
Land [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues		86		87
Property operating expenses	(78)	(115)	(162)	(429)
Mortgage and loan interest	(212)	(387)	(175)	(1,248)
Gain on land sales	12,243	530	13,578	500
Segment operating (loss) income	11,953	114	13,241	(1,090)
Capital expenditures	(74)	55	(692)	641
Real estate assets	92,798	117,642	92,798	117,642
Property Sales
Sales price	35,518	850	38,503	2,446
Cost of sale	(23,275)	(320)	(24,925)	(1,946)
Gain (loss) on sale	12,243	530	13,578	500
Other [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	2	4	6	11
Property operating expenses	(206)	(131)	(301)	(583)
Depreciation and amortization	(4)		(12)
Mortgage and loan interest	(7,699)	(6,788)	(21,365)	(21,386)
Interest income	4,021	3,175	11,441	10,305
Segment operating (loss) income	(3,886)	(3,740)	(10,250)	(11,653)
Real estate assets	643		643
Total Segments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	33,505	31,491	96,194	94,328
Property operating expenses	(15,867)	(15,157)	(45,814)	(46,256)
Depreciation and amortization	(6,891)	(6,326)	(19,859)	(19,008)
Mortgage and loan interest	(15,555)	(14,245)	(43,823)	(45,218)
Interest income	4,021	3,175	11,441	10,305
Recognition of deferred gain on sale of income - producing properties		9,841		9,841
Gain on land sales	12,243	530	13,578	500
Segment operating (loss) income	11,456	9,309	11,717	4,492
Capital expenditures	888	1,287	598	3,770
Real estate assets	1,053,452	928,935	1,053,452	928,935
Property Sales
Sales price	35,518	850	38,503	2,446
Cost of sale	(23,275)	(320)	(24,925)	(1,946)
Recognized prior deferred gain		9,841		9,841
Gain (loss) on sale	$ 12,243	$ 10,371	$ 13,578	$ 10,341