Income Taxes (Schedule of Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax based on income from continuing operations, at estimated tax rates of 32.6% in 2017 and 39.7% in 2016	$ 5,719	$ 8,076
Income tax expense before discrete items	5,719	8,076
Discrete tax expense/(benefit):
Provision for/resolution of tax audits and contingencies, net	852	(825)
Other discrete tax adjustments, net		(208)
Enacted tax legislation	(21)
Total income tax expense	$ 6,550	$ 7,043