Income Taxes (Provision (Benefit) for Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Current	$ 5,101	$ 7,250	$ 8,534	$ 17,167
Deferred	426	783	864	1,147
Provision (benefit) for income taxes	$ 5,527	$ 8,033	$ 9,398	$ 18,314

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration