Pensions (Changes In Fair Value Measurements Using Significant Unobservable Inputs) (Details) (European Plans [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Delta Lloyd Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at January 1, 2011	$ 4,409
Purchases	702
Sales/Maturities	(422)
Foreign currency translation	(175)
Balance at December 31, 2011	4,514
Insurance Reserves [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at January 1, 2011	1,163
Purchases	171
Sales/Maturities	(43)
Foreign currency translation	(45)
Balance at December 31, 2011	$ 1,246