SELECTED QUARTERLY FINANCIAL DATA (Unaudited) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SELECTED QUARTERLY FINANCIAL DATA (Unaudited) [Abstract]
Operating revenues	$ 9,271	$ 8,582	$ 7,915	$ 7,879	$ 8,038	$ 7,639	$ 8,522	$ 8,335	$ 8,846	$ 8,408	$ 7,025	$ 6,679
Operating income (loss)	692	359	118	(6,160)	(5,880)	(2,709)	(991)	(712)	(736)	(689)	(723)	(3,068)	(4,991)	(10,344)	(5,216)
Income (loss) before income tax and discontinued operations	(1,217)	(706)	367	(6,130)	(6,079)	(3,155)	624	(833)	(2,443)	1,022	420	(4,932)	(7,686)	(9,495)	(5,933)
Benefit from (provision for) income taxes	0	0	0	0	(1,302)	1,285	(379)	388	2,671	(892)	(618)	2,594	0	(44)	(3,755)
Discontinued operations, net of taxes	(3)	(128)	206	232	(548)	(75)	(1,235)	64	(3,019)	138	123	129	307	(1,794)	(2,629)
Net income (loss)	$ (1,220)	$ (834)	$ 573	$ (5,898)	$ (7,929)	$ (1,945)	$ (990)	$ (381)	$ (2,791)	$ 268	$ (75)	$ (2,209)	$ (7,379)	$ (11,245)	$ (4,807)
Income (loss) per share, basic [Abstract]
Continuing operations (in dollars per share)	$ (0.04)	$ (0.03)	$ 0.01	$ (0.22)	$ (0.27)	$ (0.07)	$ 0.01	$ (0.01)	$ 0.01	$ 0	$ (0.01)	$ (0.08)
Discontinued operations (in dollars per share)	$ 0	$ 0	$ 0.01	$ 0.01	$ (0.02)	$ 0	$ (0.05)	$ 0	$ (0.12)	$ 0.01	$ 0.01	$ 0
Income (loss) per share, basic (in dollars per share)	$ (0.04)	$ (0.03)	$ 0.02	$ (0.21)	$ (0.29)	$ (0.07)	$ (0.04)	$ (0.01)	$ (0.11)	$ 0.01	$ 0	$ (0.08)
Basic weighted average shares outstanding (in shares)	27,682,602	27,682,602	27,682,272	27,667,102	27,475,813	27,468,355	27,460,483	27,438,584	27,288,470	27,259,174	27,220,049	27,186,438
Income (loss) per shares, diluted [Abstract]
Continuing operations (in dollars per share)	$ (0.04)	$ (0.03)	$ 0.01	$ (0.22)	$ (0.27)	$ (0.07)	$ 0.01	$ (0.01)	$ 0.01	$ 0	$ (0.01)	$ (0.08)
Discontinued operations (in dollars per share)	$ 0	$ 0	$ 0.01	$ 0.01	$ (0.02)	$ 0	$ (0.05)	$ 0	$ (0.12)	$ 0.01	$ 0.01	$ 0
Income (loss) per share, diluted (in dollars per share)	$ (0.04)	$ (0.03)	$ 0.02	$ (0.21)	$ (0.29)	$ (0.07)	$ (0.04)	$ (0.01)	$ (0.11)	$ 0.01	$ 0	$ (0.08)
Diluted weighted average shares outstanding (in shares)	27,682,602	27,682,602	27,682,272	27,667,102	27,475,813	27,468,355	27,460,483	27,438,584	27,288,470	27,862,098	27,866,544	27,186,438