Income Taxes Income Taxes (Unrecognized Tax Benefits Rollforward) (Details 7) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning unrecognized tax benefits	$ 17,331	$ 17,331	$ 17,331
Increases related to current year tax positions	0	0	0
Increases related to prior year tax positions	500	0	0
Decrease related to prior year tax positions	(12,187)	0	0
Decreases related to settlement with tax authorities	0	0	0
Decreases due to lapse of applicable statute of limitations	(3,161)	0	0
Ending unrecognized tax benefits	$ 2,483	$ 17,331	$ 17,331

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of unrecognized tax benefits.

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