QUARTERLY FINANCIAL INFORMATION (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
Revenue	$ 43,864	$ 41,306	$ 42,144	$ 40,036	$ 36,411	$ 37,343	$ 37,406	$ 28,080	$ 167,350	$ 139,240	$ 77,443
Operating income (loss)	1,712	554	2,600	(5,835)	962	222	(2,045)	(246)	(969)	(1,107)	(2,851)
Income (loss) from continuing operations	2,109	555	2,683	(5,834)	1,317	316	(2,033)	(273)	(487)	(673)	(2,249)
Income (loss) from discontinued operations	13,528	(174)	(2,931)	(574)	(1,519)	(529)	9,112	(2,444)	9,849	4,620	48,874
Net income (loss) and comprehensive income (loss)	$ 15,637	$ 381	$ (248)	$ (6,408)	$ (202)	$ (213)	$ 7,079	$ (2,717)	$ 9,362	$ 3,947	$ 46,625
Income (loss) per share from continuing operations:
Basic (in dollars per share)	$ 0.19	$ 0.05	$ 0.24	$ (0.52)	$ 0.12	$ 0.03	$ (0.18)	$ (0.02)	$ (0.04)	$ (0.06)	$ (0.21)
Diluted (in dollars per share)	$ 0.18	$ 0.05	$ 0.23	$ (0.52)	$ 0.11	$ 0.03	$ (0.18)	$ (0.02)	$ (0.04)	$ (0.06)	$ (0.21)
Income (loss) per share from discontinued operations:
Basic (in dollars per share)	$ 1.21	$ (0.02)	$ (0.26)	$ (0.05)	$ (0.14)	$ (0.05)	$ 0.82	$ (0.22)
Diluted (in dollars per share)	$ 1.12	$ (0.01)	$ (0.25)	$ (0.05)	$ (0.13)	$ (0.05)	$ 0.82	$ (0.22)
Net income (loss) per share:
Basic (in dollars per share)	$ 1.39	$ 0.03	$ (0.02)	$ (0.58)	$ (0.02)	$ (0.02)	$ 0.64	$ (0.25)	$ 0.84	$ 0.36	$ 4.36
Diluted (in dollars per share)	$ 1.30	$ 0.03	$ (0.02)	$ (0.58)	$ (0.02)	$ (0.02)	$ 0.64	$ (0.25)	$ 0.84	$ 0.36	$ 4.36