Earnings Per Share Reconciliation (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
NUMERATOR
Net loss 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)
Net loss from discontinued operations	(451)	(17,423)	(912)	(2,097)	(2,349)	(943)	(368)	(787)	(20,883)	(4,447)	(19,129)
NET LOSS	$ 812	$ (21,313)	$ (10,713)	$ (19,536)	$ (19,139)	$ (29,940)	$ (21,763)	$ (14,297)	$ (50,750)	$ (85,139)	$ (162,474)
DENOMINATOR
Basic earnings per share-weighted-average 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
Effect of dilutive securities (in shares)									0	0	0
Diluted earnings per share-adjusted weighted-average shares and assumed conversions	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
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)