Income Taxes Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Federal statutory rate	35.00%	35.00%	35.00%
Foreign Operations	0.70%	0.80%	3.00%
Valuation allowance	14.80%	(0.60%)	(5.70%)
Gain on settlement of liabilities subject to compromise	(51.70%)	(1.40%)	0.00%
Income not subject to taxation	(12.60%)	(31.40%)	(30.00%)
Other	1.30%	(0.50%)	(1.10%)
Effective Income Tax Rate, Continuing Operations	(12.50%)	1.90%	1.20%