EARNINGS PER SHARE (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, 2012	Dec. 31, 2011	Dec. 31, 2010
EARNINGS PER SHARE
Loss from continuing operations	$ (5,492)	$ 5,336	$ (2,100)	$ (3,191)	$ (6,765)	$ (41,517)	$ 2,262	$ (5,133)	$ (5,447)	$ (51,153)	$ (4,963)
(Loss) income from discontinued operations									(277)	788	(153)
Net loss	$ (5,491)	$ 5,313	$ (2,355)	$ (3,191)	$ (5,977)	$ (41,517)	$ 2,262	$ (5,133)	$ (5,724)	$ (50,365)	$ (5,116)
Shares outstanding:
Weighted average shares outstanding	28,054,429	28,047,046	27,984,595	27,960,030	27,940,702	27,880,204	27,800,392	27,717,041	28,011,513	27,835,649	27,549,546
Diluted shares outstanding	28,054,429	28,416,008	27,984,595	27,960,030	27,940,702	27,880,204	27,869,684	27,717,041	28,011,513	27,835,649	27,549,546
Basic net (loss) income per common share:
Continuing operations (in dollars per share)	$ (0.20)	$ 0.19	$ (0.08)	$ (0.11)	$ (0.24)	$ (1.49)	$ 0.08	$ (0.19)	$ (0.19)	$ (1.84)	$ (0.18)
Discontinued operations (in dollars per share)									$ (0.01)	$ 0.03	$ (0.01)
Basic net loss per common share (in dollars per share)	$ (0.20)	$ 0.19	$ (0.09)	$ (0.11)	$ (0.21)	$ (1.49)	$ 0.08	$ (0.19)	$ (0.20)	$ (1.81)	$ (0.19)
Diluted net (loss) income per common share:
Continuing operations (in dollars per share)	$ (0.20)	$ 0.19	$ (0.08)	$ (0.11)	$ (0.24)	$ (1.49)	$ 0.08	$ (0.19)	$ (0.19)	$ (1.84)	$ (0.18)
Discontinued operations (in dollars per share)									$ (0.01)	$ 0.03	$ (0.01)
Diluted net loss per common share (in dollars per share)	$ (0.20)	$ 0.19	$ (0.09)	$ (0.11)	$ (0.21)	$ (1.49)	$ 0.08	$ (0.19)	$ (0.20)	$ (1.81)	$ (0.19)