Income Taxes Reconciliation of effective income tax rate (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. statutory tax rate	(35.00%)	(35.00%)	[1]	(35.00%)	[1]
State tax benefit (net of federal benefits)	(6.20%)	(9.20%)	[1]	(7.10%)	[1]
Foreign income tax provision	0.00%	0.00%	[1]	0.00%	[1]
Deferred tax assets valuation reserve	42.10%	26.00%	[1]	42.60%	[1]
Loss on early extinguishment of debt	0.00%	17.80%	[1]	0.00%	[1]
Other	(0.90%)	0.40%	[1]	(0.50%)	[1]
Effective tax rate as reported	0.00%	0.00%	[1]	0.00%	[1]

[1] We have made certain changes in the classification and presentation of certain items. These changes do not affect the disclosed effective tax rate.