OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Rental and other property revenues	$ 31,807	$ 30,067	$ 95,216	$ 90,106
Property operating expenses	(15,403)	(15,671)	(47,098)	(46,078)
Interest income	4,232	5,712	14,083	15,791
Gain on land sales	1,062	555	1,032	3,925
Segment operating income (loss)	5,410	3,795	14,709	11,741
Real estate assets	939,243	909,709	939,243	909,709
Commercial Properties [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	8,461	7,658	26,172	24,496
Property operating expenses	(4,485)	(4,727)	(14,324)	(14,658)
Depreciation	(2,345)	(2,236)	(7,045)	(6,820)
Mortgage and loan interest	(1,902)	(1,700)	(5,629)	(5,371)
Gain on sale of income producing properties				6
Segment operating income (loss)	(271)	(1,005)	(826)	(2,347)
Capital expenditures	691	2,045	2,623	4,125
Real estate assets	147,377	151,900	147,377	151,900
Apartments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	23,231	22,408	68,922	65,578
Property operating expenses	(10,659)	(10,693)	(31,616)	(30,255)
Depreciation	(4,028)	(3,807)	(12,105)	(10,958)
Mortgage and loan interest	(5,168)	(6,424)	(16,955)	(18,689)
Gain on sale of income producing properties	12,760		12,760	4,919
Segment operating income (loss)	16,136	1,484	21,006	10,595
Capital expenditures			543	(146)
Real estate assets	663,636	613,431	663,636	613,431
Property Sales
Sales price				11,129
Cost of sale				(10,394)
Recognized prior deferred gain	12,760		12,760
Gain (loss) on sale	12,760		12,760	735
Land [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	111		111	30
Property operating expenses	(127)	(243)	(575)	(1,159)
Mortgage and loan interest	(420)	(550)	(1,503)	(1,703)
Gain on land sales	1,062	555	1,032	3,925
Segment operating income (loss)	626	(238)	(935)	1,093
Capital expenditures	55	375	641	1,873
Real estate assets	128,230	144,378	128,230	144,378
Property Sales
Sales price	850	805	2,446	11,987
Cost of sale	(320)	(250)	(1,946)	(6,863)
Recognized prior deferred gain	532		532	2,737
Gain (loss) on sale	1,062	555	1,032	7,861
Other [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	4	1	11	2
Property operating expenses	(132)	(8)	(583)	(6)
Depreciation		18	37	55
Mortgage and loan interest	(8,227)	(6,688)	(25,772)	(17,788)
Interest income	4,232	5,712	14,083	15,791
Segment operating income (loss)	(4,123)	(965)	(12,224)	(1,946)
Total Segments [Member]
Segment Reporting Information [Line Items]
Rental and other property revenues	31,807	30,067	95,216	90,106
Property operating expenses	(15,403)	(15,671)	(47,098)	(46,078)
Depreciation	(6,373)	(6,025)	(19,113)	(17,723)
Mortgage and loan interest	(15,717)	(15,362)	(49,859)	(43,551)
Interest income	4,232	5,712	14,083	15,791
Gain on sale of income producing properties	12,760		12,760	4,925
Gain on land sales	1,062	555	1,032	3,925
Segment operating income (loss)	12,368	(724)	7,021	7,395
Capital expenditures	1,289	2,420	3,807	5,852
Real estate assets	939,243	909,709	939,243	909,709
Property Sales
Sales price	850	805	2,446	23,116
Cost of sale	(320)	(250)	(1,946)	(17,257)
Recognized prior deferred gain	13,292		13,292	2,737
Gain (loss) on sale	$ 13,822	$ 555	$ 13,792	$ 8,596