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		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
United Kingdom Subsidiary [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 3,044	$ 3,102	$ 9,147	$ 9,323
Expected return on plan assets	(3,549)	(3,251)	(10,664)	(9,772)
Amortization of unrecognized loss	633	606	1,902	1,823
Net periodic pension cost	$ 128	$ 457	$ 385	$ 1,374