Retirement Plans (Components Of Net Periodic Pension Benefit Cost) (Details) (United Kingdom Subsidiary [Member], Foreign Pension Plans, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
United Kingdom Subsidiary [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 3,498	$ 3,070
Expected return on plan assets	(4,211)	(3,579)
Amortization of unrecognized loss	506	638
Net periodic pension (income) expense	$ (207)	$ 129