Income Taxes (Schedule of Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income tax based on income from continuing operations, at estimated tax rates of 39.7% and 40.0%, respectively	$ 8,076	$ 8,300
Income tax before discrete items	8,076	8,300
Provision for/resolution of tax audits and contingencies, net	(825)	83
Other discrete tax adjustments, net	$ (208)	45
Enacted legislation change		91
Total income tax expense	$ 7,043	$ 8,519
Estimated tax rate	39.70%	40.00%