QUARTERLY FINANCIAL DATA (Unaudited) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	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, 2011	Dec. 31, 2010	Dec. 31, 2009
CONSOLIDATED RESULTS
Revenues	$ 261,752	$ 248,967	$ 212,241	$ 167,773	$ 215,070	$ 202,477	$ 346,714	$ 237,691	$ 890,733	$ 1,001,952	$ 1,186,127
(Loss) earnings from continuing operations before taxes	814	(3,908)	(9,801)	(19,837)	(17,015)	(28,577)	(21,395)	(13,510)	(32,732)	(80,497)	(240,542)
Tax (benefit) expense	(449)	(18)	0	(2,398)	(225)	420	0	0	(2,865)	195	(97,197)
Net (loss) income from continuing operations	1,263	(3,890)	(9,801)	(17,439)	(16,790)	(28,997)	(21,395)	(13,510)	(29,867)	(80,692)	(143,345)
Loss from discontinued operations, net of taxes	(451)	(17,423)	(912)	(2,097)	(2,349)	(943)	(368)	(787)	(20,883)	(4,447)	(19,129)
NET (LOSS) EARNINGS	$ 812	$ (21,313)	$ (10,713)	$ (19,536)	$ (19,139)	$ (29,940)	$ (21,763)	$ (14,297)	$ (50,750)	$ (85,139)	$ (162,474)
Basic
Continuing operations (in dollars per share)	$ 0.03	$ (0.09)	$ (0.22)	$ (0.39)	$ (0.38)	$ (0.66)	$ (0.48)	$ (0.31)	$ (0.67)	$ (1.83)	$ (3.30)
Discontinued operations (in dollars per share)	$ (0.01)	$ (0.39)	$ (0.02)	$ (0.05)	$ (0.05)	$ (0.02)	$ (0.01)	$ (0.02)	$ (0.47)	$ (0.10)	$ (0.44)
Total (in dollars per share)	$ 0.02	$ (0.48)	$ (0.24)	$ (0.44)	$ (0.43)	$ (0.68)	$ (0.49)	$ (0.33)	$ (1.14)	$ (1.93)	$ (3.74)
Diluted
Continuing operations (in dollars per share)	$ 0.03	$ (0.09)	$ (0.22)	$ (0.39)	$ (0.38)	$ (0.66)	$ (0.48)	$ (0.31)	$ (0.67)	$ (1.83)	$ (3.30)
Discontinued operations (in dollars per share)	$ (0.01)	$ (0.39)	$ (0.02)	$ (0.05)	$ (0.05)	$ (0.02)	$ (0.01)	$ (0.02)	$ (0.47)	$ (0.10)	$ (0.44)
Total (in dollars per share)	$ 0.02	$ (0.48)	$ (0.24)	$ (0.44)	$ (0.43)	$ (0.68)	$ (0.49)	$ (0.33)	$ (1.14)	$ (1.93)	$ (3.74)
Weighted-average common shares outstanding:
Basic (in shares)	44,410,000	44,409,000	44,369,000	44,239,000	44,150,000	44,095,000	44,039,000	43,914,000	44,357,470	44,050,013	43,464,955
Diluted (in shares)	45,075,000	44,409,000	44,369,000	44,239,000	44,150,000	44,095,000	44,039,000	43,914,000	44,357,470	44,050,013	43,464,955