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Correction of Previously Issued Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Consolidated Statement of Comprehensive (Loss) Income
General and administrative expenses	$ 629	$ 678	$ 2,403	$ 5,113
Pension and other postretirement expense	266	281	798	879
(Gain) loss on asset dispositions	5		(229)	(1,376)
Pension, net of income taxes of $0	185	203	555	626
Income taxes	0	0	0	0
Comprehensive (loss) income	(1,431)	(1,136)	(2,339)	9,250
Consolidated Statement of Stockholders' Deficiency
Other comprehensive income-pension	185	203	555	626
Accumulated other comprehensive loss	(23,014)	(16,268)	(23,014)	(16,268)	(23,569)
As Previously Reported
Consolidated Statement of Comprehensive (Loss) Income
General and administrative expenses		959		4,445
(Gain) loss on asset dispositions				171
Comprehensive (loss) income		(1,339)		8,624
Consolidated Statement of Stockholders' Deficiency
Accumulated other comprehensive loss		(16,894)		(16,894)
Adjustments | Reclassifications
Consolidated Statement of Comprehensive (Loss) Income
General and administrative expenses		(281)		(879)
Pension and other postretirement expense		281		879
Adjustments | Corrections of Error
Consolidated Statement of Comprehensive (Loss) Income
General and administrative expenses				1,547
(Gain) loss on asset dispositions				(1,547)
Pension, net of income taxes of $0		203		626
Comprehensive (loss) income		203		626
Consolidated Statement of Stockholders' Deficiency
Other comprehensive income-pension		203		626
Accumulated other comprehensive loss		$ 626		$ 626

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