SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
Total revenues	$ 99,141	$ 109,256	$ 105,525	$ 89,544	$ 77,956	$ 82,174	$ 79,105	$ 59,723	$ 403,466	$ 298,958	$ 161,700
Net income (loss) from continuing operations	4,517	3,766	9,201	2,947	(3,855)	2,837	6,126	1,517	20,431	6,625	(6,947)
Net income (loss) from discontinued operations	214	(59)	(41)	378	1,780	(3,410)	545	357	492	(728)	4,677
Net income (loss)	4,731	3,707	9,160	3,325	(2,075)	(573)	6,671	1,874	20,923	5,897	(2,270)
Net Income (Loss) Attributable to Parent	$ 4,725	$ 3,713	$ 8,975	$ 3,458	$ (1,859)	$ (662)	$ 6,459	$ 1,940	$ 20,871	$ 5,878	$ (1,076)
Earnings Per Share, Basic and Diluted [Abstract]
Net income (loss) from continuing operations (in dollars per share)	$ 0.01	$ (0.01)	$ 0.06	$ (0.01)	$ (0.09)	$ (0.02)	$ 0.03	$ (0.03)	$ 0.04	$ (0.11)	$ (0.28)
Net income (loss) from discontinued operations (in dollars per share)					$ 0.02	$ (0.05)	$ 0.01	$ 0.01	$ 0.01	$ (0.01)	$ 0.11
Basic and diluted net income (loss) per share (in dollars per share)	$ 0.01	$ (0.01)	$ 0.06	$ (0.01)	$ (0.07)	$ (0.07)	$ 0.04	$ (0.02)	$ 0.05	$ (0.12)	$ (0.17)