Pension and Other Postretirement Benefits (Schedule of Net Periodic Benefit Cost) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
U.S. Plans [Member]
Service cost
Interest cost	897	965	1,794	1,930
Expected return on plan assets	(1,054)	(885)	(2,108)	(1,770)
Unrecognized prior service cost
Unrecognized net actuarial loss (gain)	308	359	616	718
Total net periodic benefit cost (income)	151	439	302	878
Non-U.S. Plans [Member]
Service cost	276	252	538	524
Interest cost	3,066	2,808	6,036	5,772
Expected return on plan assets	(2,829)	(2,509)	(5,586)	(5,134)
Unrecognized prior service cost	10	6	19	12
Unrecognized net actuarial loss (gain)	224	238	443	494
FASB ASC 715-30 curtailment gain				(837)
Total net periodic benefit cost (income)	747	795	1,450	831
Other Postretirement Benefits [Member]
Service cost	8	4	15	8
Interest cost	193	249	386	498
Unrecognized prior service cost	(15)	(25)	(30)	(50)
Unrecognized net actuarial loss (gain)	(318)	(325)	(636)	(650)
Total net periodic benefit cost (income)	$ (132)	$ (97)	$ (265)	$ (194)