QUARTERLY RESULTS OF OPERATIONS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 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
Quarterly Financial Information Disclosure [Abstract]
Rents and interest and other income	$ 29,271	$ 29,776	$ 30,521	$ 28,903	$ 28,621	$ 27,539	$ 23,756	$ 22,304	$ 20,578	$ 18,466	$ 18,511	$ 18,303	$ 118,471	$ 102,220	$ 75,858
Total operating expenses	25,821	25,429	24,751	24,823	29,732	24,613	19,310	19,264	22,059	17,264	18,388	17,376	100,824	92,919	75,087
Operating income (loss)	3,450	4,347	5,770	4,080	(1,111)	2,926	4,446	3,040	(1,481)	1,202	123	927	17,647	9,301	771
Other expenses	(10,364)	(9,309)	(7,901)	(9,054)	(13,243)	(11,211)	(5,243)	(6,398)	(5,242)	(5,754)	(3,718)	(2,899)	(36,628)	(36,095)	(17,613)
Loss before gain on land sales, non-contolling interest, and taxes	(6,914)	(4,962)	(2,131)	(4,974)	(14,354)	(8,285)	(797)	(3,358)	(6,723)	(4,552)	(3,595)	(1,972)	(18,981)	(26,794)	(16,842)
Gain (loss) on sale of income-producing properties	11,283		5,168	(244)									16,207	735	61,879
Gain (loss) on land sales	(805)	555	1,719	1,652	13,788	997	1,250	2,876	(73)	40	(159)	753	16,207
Income tax benefit (expense)		(25)		1	(881)	274	(12)	102	15,360	786	2,195	2,049	24	517	(20,390)
Net income (loss) from continuing operations	3,564	(4,432)	4,756	(3,565)	(1,447)	(7,014)	441	(380)	8,564	(3,726)	(1,559)	830	323	(8,400)	4,109
Net income from discontinued operations	(3)			2	220	508	(22)	190	28,526	1,461	4,076	3,805	(1)	896	37,868
Net income (loss)	3,561	(4,432)	4,756	(3,563)	(1,227)	(6,506)	419	(190)	37,090	(2,265)	2,517	4,635	322	(7,504)	41,977
Net (loss) attributable to non-controlling interest	(97)	(114)	(97)	23	(51)	(95)	(281)	295	(107)	(81)	(127)	(84)
Preferred dividend requirement	(227)	(227)	(224)	(222)	(227)	(227)	(224)	(222)	(227)	(227)	(277)	(274)
Net income (loss) applicable to common shares	$ 3,237	$ (4,773)	$ 4,435	$ (3,762)	$ (1,505)	$ (6,828)	$ (86)	$ (117)	$ 36,756	$ (2,573)	$ 2,113	$ 4,277	$ (863)	$ (8,536)	$ 40,573
Earnings per share - basic
Income (loss) from continuing operations	$ 0.37	$ (0.55)	$ 0.51	$ (0.43)	$ (0.19)	$ (0.84)	$ (0.01)	$ (0.04)	$ 0.94	$ (0.46)	$ (0.23)	$ 0.06	$ (.10)	$ (1.08)	$ 0.32
Income from discontinued operations					0.02	0.06		0.02	3.27	0.17	0.48	0.45		0.10	4.42
Net income (loss) applicable to common shares	$ 0.37	$ (0.55)	$ 0.51	$ (0.43)	$ (0.17)	$ (0.78)	$ (0.01)	$ (0.02)	$ 4.21	$ (0.29)	$ 0.25	$ 0.51	$ (.10)	$ (0.98)	$ 4.74
Weighted average common shares used in computing earnings per share	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,688,018	8,413,469	8,413,469	8,717,767	8,717,767	8,559,370
Earnings per share - diluted
Income (loss) from continuing operations	$ 0.37	$ (0.55)	$ 0.51	$ (0.43)	$ (0.19)	$ (0.84)	$ (0.01)	$ (0.04)	$ 0.94	$ (0.46)	$ (0.23)	$ 0.05	$ (.10)	$ (1.08)	$ 0.32
Income from discontinued operations					0.02	0.06		0.02	3.27	0.17	0.48	0.44		0.10	4.42
Net income (loss) applicable to common shares	$ 0.37	$ (0.55)	$ 0.51	$ (0.43)	$ (0.17)	$ (0.78)	$ (0.01)	$ (0.02)	$ 4.21	$ (0.29)	$ 0.25	$ 0.49	$ (.10)	$ (0.98)	$ 4.74
Weighted average common shares used in computing diluted earnings per share	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,717,767	8,688,018	8,413,469	8,639,679	8,717,767	8,717,767	8,559,370