Income Taxes (Schedule of Components of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Abstract]
Income tax based on income from continuing operations, at estimated tax rates of 34.0% and (6.5%), respectively	$ 6,038	$ 60
Pension plan settlement		(3,299)
Income tax before discrete items	6,038	(3,239)
Provision for/resolution of tax audits and contingencies, net		(6,733)
Adjustments to prior period tax liabilities	210
Total income tax expense/(benefit)	$ 6,248	$ (9,972)
Estimated tax rate	34.00%	(6.50%)