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SELECTED QUARTERLY FINANCIAL DATA (Unaudited) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	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, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
SELECTED QUARTERLY FINANCIAL DATA (Unaudited) [Abstract]
Operating revenues	$ 8,038	$ 7,639	$ 8,522	$ 8,335	$ 7,107	$ 9,972	$ 8,148	$ 4,883	$ 5,023	$ 5,717	$ 6,218	$ 7,709
Operating income (loss)	(5,932)	(2,709)	(991)	(712)	(2,475)	875	400	(4,864)	(2,862)	(958)	(297)	1,250	(10,344)	(5,216)	(986)
Income (loss) before income tax and discontinued operations	(6,131)	(3,155)	624	(833)	(2,362)	1,022	339	(4,932)	(2,359)	(950)	(176)	2,340	(9,495)	(5,933)	(1,318)
Benefit from (provision for) income taxes	(1,250)	1,285	379	388	2,671	(892)	(618)	2,594	1,975	634	17	(888)	(44)	(3,755)	(1,860)
Discontinued operations, net of taxes	(548)	(75)	(1,235)	64	(3,100)	138	204	129	(1,549)	81	28	75	(1,794)	(2,629)	(1,314)
Net income (loss)	$ (7,929)	$ (1,945)	$ (990)	$ (381)	$ (2,791)	$ 268	$ (75)	$ (2,209)	$ (1,933)	$ (235)	$ (131)	$ 1,527	$ (11,245)	$ (4,807)	$ (772)
Income (loss) per shares, basic [Abstract]
Continuing operations (in dollars per share)	$ (0.27)	$ (0.07)	$ 0.01	$ (0.01)	$ 0.01	$ 0	$ (0.01)	$ (0.08)	$ (0.02)	$ (0.01)	$ 0	$ 0.06
Discontinued operations (in dollars per share)	$ (0.02)	$ 0	$ (0.05)	$ 0	$ (0.12)	$ 0.01	$ 0.01	$ 0	$ (0.05)	$ 0	$ 0	$ 0
Income (loss) per share, basic (in dollars per share)	$ (0.29)	$ (0.07)	$ (0.04)	$ (0.01)	$ (0.11)	$ 0.01	$ 0	$ (0.08)	$ (0.07)	$ (0.01)	$ 0	$ 0.06
Basic weighted average shares outstanding (in shares)	27,475,813	27,468,355	27,460,483	27,438,584	27,288,470	27,259,174	27,220,049	27,186,438	26,973,834	26,855,513	26,734,636	26,487,162
Income (loss) per shares, diluted [Abstract]
Continuing operations (in dollars per share)	$ (0.27)	$ (0.07)	$ 0.01	$ (0.01)	$ 0.01	$ 0	$ (0.01)	$ (0.08)	$ (0.02)	$ (0.01)	$ 0	$ 0.05
Discontinued operations (in dollars per share)	$ (0.02)	$ 0	$ (0.05)	$ 0	$ (0.12)	$ 0.01	$ 0.01	$ 0	$ (0.05)	$ 0	$ 0	$ 0
Income (loss) per share, diluted (in dollars per share)	$ (0.29)	$ (0.07)	$ (0.04)	$ (0.01)	$ (0.11)	$ 0.01	$ 0	$ (0.08)	$ (0.07)	$ (0.01)	$ 0	$ 0.05
Diluted weighted average shares outstanding (in shares)	27,475,813	27,468,355	27,460,483	27,438,584	27,288,470	27,862,098	27,866,544	27,186,438	26,973,834	26,855,513	26,734,636	27,785,572	27,466,549	27,238,869	26,763,995

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