Retirement Plans (Schedule Of Net Benefit Costs UK) (Details) (Foreign Pension Plans, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 89	$ 66	$ 252	$ 201
Expected return on plan assets	(76)	(72)	(215)	(220)
Amortization of transition amount	(12)	(12)	(36)	(36)
Recognized net actuarial loss	58	29	165	85
Net periodic cost	$ 59	$ 11	$ 166	$ 30