Income Taxes (Reclassification of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets	$ 82,713	$ 39,002
Deferred tax liabilities	82,010	36,622
Net deferred tax assets (liabilities)	$ (13,660)	(8,031)
As Reported [Member]
Deferred tax assets		19,129
Deferred tax liabilities		36,387
Net deferred tax assets (liabilities)		(17,258)
Scenario, Adjustment [Member]
Deferred tax assets		(10,035)
Deferred tax liabilities		(19,262)
Net deferred tax assets (liabilities)		9,227
Current Presentation [Member]
Deferred tax assets		9,094
Deferred tax liabilities		17,125
Net deferred tax assets (liabilities)		$ (8,031)