OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 30, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Operating revenue	$ 29,557	$ 30,067	$ 30,834	$ 29,205	$ 28,965	$ 27,826	$ 24,241	$ 23,156	$ 21,427	$ 19,326	$ 19,500	$ 19,159	$ 119,663	$ 104,188	$ 79,412
Operating expenses													(62,950)	(54,002)	(42,124)
Interest income													20,453	16,674	20,054
Gain on sale of income producing properties	(11,283)		(5,168)	244
Gain on land sales	(805)	555	1,719	1,652	13,787	1,958	3,027	2,876	(73)	40	(159)	753	3,121	21,648	561
Segment operating income (loss)	$ 2,893	$ 3,795	$ 4,622	$ 3,324	(1,631)	$ 2,085	$ 3,853	$ 2,001	(3,455)	$ 468	$ (414)	$ 202	14,634	6,308	(3,199)
Assets					853,507				699,763				901,006	853,507	699,763
Property Sales
Gain (loss) on sale													16,207	735	61,879
Commercial Properties [Member]
Segment Reporting Information [Line Items]
Operating revenue													33,026	30,540	20,476
Operating expenses													(20,398)	(17,761)	(13,127)
Depreciation and amortization													(9,099)	(8,993)	(7,413)
Mortgage and loan interest													(7,191)	(6,919)	(6,139)
Gain on sale of income producing properties													(238)
Segment operating income (loss)													(3,900)	(3,133)	(6,203)
Capital expenditures													5,008	8,133	4,874
Assets					155,147				142,118				150,838	155,147	142,118
Property Sales
Sales price													1,500		19,182
Less: Cost of sale													(1,738)		(9,168)
Gain (loss) on sale													(238)		10,014
Apartments [Member]
Segment Reporting Information [Line Items]
Operating revenue													86,603	73,543	58,882
Operating expenses													(40,786)	(34,955)	(27,588)
Depreciation and amortization													(14,759)	(12,498)	(10,270)
Mortgage and loan interest													(25,381)	(23,699)	(19,403)
Gain on sale of income producing properties													16,445
Segment operating income (loss)													22,122	2,391	1,621
Capital expenditures													(864)	506	320
Assets					551,415				390,366				622,061	551,415	390,366
Property Sales
Sales price													20,350	11,129	115,273
Less: Cost of sale													(3,905)	(10,394)	(63,408)
Gain (loss) on sale													16,445	735	51,865
Land [Member]
Segment Reporting Information [Line Items]
Operating revenue													30		1
Operating expenses													(1,745)	(1,029)	(1,397)
Mortgage and loan interest													(2,232)	(4,694)	(4,684)
Gain on land sales													3,121	21,648	561
Segment operating income (loss)													(826)	15,925	(5,519)
Capital expenditures													268	2,621	2,436
Assets					146,945				167,279				128,107	146,945	167,279
Property Sales
Sales price													29,128	107,298	8,091
Less: Cost of sale													(26,007)	(88,387)	(7,530)
Recognized prior deferred gain														2,737
Gain (loss) on sale													3,121	21,648	561
Other [Member]
Segment Reporting Information [Line Items]
Operating revenue													4	105	53
Operating expenses													(21)	(257)	(12)
Depreciation and amortization													73	73	90
Mortgage and loan interest													(24,558)	(17,165)	(10,600)
Interest income													20,453	16,674	20,054
Segment operating income (loss)													(4,049)	(570)	9,585
Total Segments [Member]
Segment Reporting Information [Line Items]
Operating revenue													119,663	104,188	79,412
Operating expenses													(62,950)	(54,002)	(42,124)
Depreciation and amortization													(23,785)	(21,418)	(17,593)
Mortgage and loan interest													(59,362)	(52,477)	(40,826)
Interest income													20,453	16,674	20,054
Gain on sale of income producing properties													16,207
Gain on land sales													3,121	21,648	561
Segment operating income (loss)													13,347	14,613	(516)
Capital expenditures													6,140	11,260	7,630
Assets					$ 853,507				$ 699,763				901,006	853,507	699,763
Property Sales
Sales price													50,978	118,427	142,546
Less: Cost of sale													(31,650)	(98,781)	(80,106)
Recognized prior deferred gain														2,737
Gain (loss) on sale													$ 19,328	$ 22,383	$ 62,440