OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Rental and other property revenues	$ 31,587	$ 30,834	$ 63,409	$ 60,039
Property operating expenses	(15,429)	(15,191)	(31,693)	(30,407)
Interest income	5,059	4,788	9,852	10,079
Gain (loss) on land sales	(476)	1,719	(31)	3,370
Segment operating income (loss)	4,828	4,622	9,306	7,946
Real estate assets	930,647	901,404	930,647	901,404
Commercial Properties [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	8,553	8,947	17,711	16,838
Property operating expenses	(4,900)	(4,836)	(9,839)	(9,931)
Depreciation	(2,397)	(2,270)	(4,699)	(4,584)
Mortgage and loan interest	(2,121)	(1,696)	(3,727)	(3,671)
Gain on sale of income producing properties		6		6
Segment operating income (loss)	(865)	151	(554)	(1,342)
Capital expenditures	557	680	1,932	2,080
Real estate assets	148,718	151,759	148,718	151,759
Property Sales
Sales price				1,500
Cost of sale				(1,743)
Gain (loss) on sale				(243)
Apartments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	23,030	21,856	45,691	43,170
Property operating expenses	(10,211)	(10,168)	(20,956)	(19,562)
Depreciation	(4,030)	(3,616)	(8,076)	(7,151)
Mortgage and loan interest	(5,028)	(6,109)	(11,787)	(12,265)
Gain on sale of income producing properties		5,162		4,919
Segment operating income (loss)	3,761	7,125	4,872	9,111
Capital expenditures		(146)	585	(146)
Real estate assets	654,119	603,829	654,119	603,829
Property Sales
Sales price		8,100		8,100
Cost of sale		(2,932)		(2,932)
Gain (loss) on sale		5,168		5,168
Land [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues		30		30
Property operating expenses	(168)	(169)	(447)	(916)
Mortgage and loan interest	(389)	(841)	(1,083)	(1,153)
Gain (loss) on land sales	(476)	1,719	(31)	3,370
Segment operating income (loss)	(1,033)	739	(1,561)	1,331
Capital expenditures	186	727	399	1,498
Real estate assets	127,810	145,816	127,810	145,816
Property Sales
Sales price	507	3,154	1,596	7,334
Cost of sale	(983)	(1,435)	(1,627)	(3,964)
Gain (loss) on sale	(476)	1,719	(31)	3,370
Other [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	4	1	7	1
Property operating expenses	(150)	(18)	(451)	2
Depreciation	18	18	36	37
Mortgage and loan interest	(9,809)	(5,329)	(17,546)	(11,100)
Interest income	5,059	4,788	9,852	10,079
Segment operating income (loss)	(4,878)	(540)	(8,102)	(981)
Total Segments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	31,587	30,834	63,409	60,039
Property operating expenses	(15,429)	(15,191)	(31,693)	(30,407)
Depreciation	(6,409)	(5,868)	(12,739)	(11,698)
Mortgage and loan interest	(17,347)	(13,975)	(34,143)	(28,189)
Interest income	5,059	4,788	9,852	10,079
Gain on sale of income producing properties		5,168		4,925
Gain (loss) on land sales	(476)	1,719	(31)	3,370
Segment operating income (loss)	(3,015)	7,475	(5,345)	8,119
Capital expenditures	743	1,261	2,517	3,432
Real estate assets	930,647	901,404	930,647	901,404
Property Sales
Sales price	507	11,254	1,596	16,934
Cost of sale	(983)	(4,367)	(1,627)	(8,639)
Gain (loss) on sale	$ (476)	$ 6,887	$ (31)	$ 8,295