Income Taxes (Unrecognized Tax Position) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Activity related to unrecognized tax position
Beginning Balance	$ 10,419	$ 10,419	$ 7,125
Additions for tax positions related to prior years	0	0	5,819
Deductions for tax positions related to prior years	(3,969)	0	0
Settlements with taxing authorities	(2,072)	0	(2,525)
Ending Balance	4,378	10,419	10,419
Total amount of unrecognized tax position that, if recognized, would impact the effective tax rate	3,500	8,200
(Reversal) charge of Interest and penalties related to income taxes	(2,000)	450	$ 6,200
Total interest and penalties accrued	$ 6,300	$ 8,400