QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								10 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, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Revenues from continuing operations	$ 67,874	$ 66,395	$ 66,919	$ 67,239	$ 65,252	$ 63,117	$ 65,187	$ 62,597		$ 268,427	$ 256,153	$ 235,813
Gain on sale of real estate	3,092									3,092
Bargain purchase gain								4,918			4,918
Income (loss) from continuing operations	3,123	233	998	(230)	(3,469)	975	4,170	10,284		4,124	11,960	14,679
Income from operations of assets held for sale	8,325	5,008	3,984	2,962	4,056	3,305	4,344	933	$ 12,638	20,279	12,638
Net income	11,448	5,241	4,982	2,732	587	4,280	8,514	11,217		24,403	24,598	14,679
Net income attributable to stockholders	11,442	5,242	4,976	2,732	475	4,285	8,399	11,219		24,392	24,378	14,466
Comprehensive income (loss)	15,241	(1,071)	4,982	2,732	587	4,280	8,514	11,217		21,884	24,598	14,679
Comprehensive income	$ 15,235	$ (1,070)	$ 4,976	$ 2,732	$ 475	$ 4,285	$ 8,399	$ 11,219		$ 21,873	$ 24,378	$ 14,466
BASIC INCOME PER SHARE:
Continuing operations	$ 0.03	$ 0.00	$ 0.01	$ 0.00	$ (0.04)	$ 0.01	$ 0.04	$ 0.11
Discontinued operations	0.09	0.05	0.04	0.03	0.04	0.03	0.05	0.01
Net income	$ 0.12	$ 0.05	$ 0.05	$ 0.03	$ 0.00	$ 0.04	$ 0.09	$ 0.12
Weighted average common shares outstanding - basic	97,590	97,590	97,589	97,582	97,582	97,582	97,571	95,934		97,588	97,173	95,440
Weighted average common shares outstanding - diluted	97,590	97,590	97,589	97,582	97,583	97,583	97,576	95,936		97,588	97,176	95,440