QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	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, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 27,795	$ 20,936	$ 27,285	$ 23,839	$ 21,517	$ 20,500	$ 21,547	$ 20,251	$ 99,855	$ 83,815	$ 76,575
Operating (loss) income	6,087	1,659	6,535	4,542	2,947	4,738	4,771	2,071	18,823	14,528	9,283
Net income (loss)	2,498	89	1,566	3,191	2,186	3,251	3,053	1,256	8,232	9,747	8,190
Net (income) loss attributable to noncontrolling interests	1,188	(210)	(1,365)	(1,657)	(27)	(657)	(84)	40	(2,044)	(729)	(20)
Net income (loss) attributable to common shareholders	$ 3,686	$ (121)	$ 201	$ 1,534	$ 2,159	$ 2,594	$ 2,969	$ 1,296	$ 6,188	$ 9,018	$ 8,170
Basic earnings per common share:
Basic earnings per common share (in dollars per share)	$ 0.18	$ (0.01)	$ 0.01	$ 0.07	$ 0.09	$ 0.13	$ 0.15	$ 0.06	$ 0.28	$ 0.43	$ 0.40
Diluted earnings per common share:
Diluted earnings per common share (in dollars per share)	$ 0.17	$ (0.01)	$ 0.01	$ 0.07	$ 0.09	$ 0.12	$ 0.13	$ 0.06	$ 0.28	$ 0.40	$ 0.37