Income Taxes Unrecognized tax benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 2,071
Unrecognized Tax Benefits	34,786	34,786	37,586
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	0	0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	0
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	0	(2,800)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	6,200	4,831
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 1,369	$ (543)	$ (3,096)