Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1,	$ 0	$ 30,196	$ 9,488
Increases in unrecognized tax benefits-prior years	0	0	12,373
(Decreases) in unrecognized tax benefits-prior years	0	0	0
Increases in unrecognized tax benefits-current year	0	0	8,335
(Decreases) in unrecognized tax benefits-current year	0	0	0
Settlements with taxing authorities	0	(30,196)	0
Balance at December 31,	0	0	30,196
Unrecognized tax benefits that, if recognized, would favorably impact the effective rate	$ 0	$ 0	$ 30,196