Pension (Net Pension Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Pension Plans and SERP
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	$ 7,706	$ 7,044	$ 6,944
Interest cost on projected benefit obligation	20,352	21,038	20,453
Expected return on plan assets	(20,896)	(19,472)	(19,146)
Amortization of unrecognized:
Prior service cost	2,209	2,335	2,330
Actuarial loss	6,962	5,154	4,038
Transition obligations	102	125	122
Settlement charge	4,131	58	47
Curtailment charge	375	0	0
Pension expense	20,941	16,282	14,788
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	5,957	5,491	5,341
Interest cost on projected benefit obligation	15,398	16,057	15,896
Expected return on plan assets	(18,514)	(17,173)	(16,683)
Amortization of unrecognized:
Prior service cost	2,050	2,163	2,328
Actuarial loss	6,429	4,661	3,621
Transition obligations	0	0	0
Settlement charge	3,931	0	0
Curtailment charge	375	0	0
Pension expense	15,626	11,199	10,503
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	1,749	1,553	1,603
Interest cost on projected benefit obligation	4,954	4,981	4,557
Expected return on plan assets	(2,382)	(2,299)	(2,463)
Amortization of unrecognized:
Prior service cost	159	172	2
Actuarial loss	533	493	417
Transition obligations	102	125	122
Settlement charge	200	58	47
Curtailment charge	0	0	0
Pension expense	$ 5,315	$ 5,083	$ 4,285