Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Comprehensive Income [Abstract]
Foreign Currncy Translation, Change in Period	$ 22,384	$ (33,523)	$ 810	$ (3,025)
Foreign Currency Translation, Tax	0	0	0	0
Exchange rate impact on OCI foreign currency translation	0	0	0	0
Foreign Currency Translation, Net Change	22,384	(33,523)	810	(3,025)
Pension and Postretirement Plan Adjustment, Change in Period	1,377	20,219	4,134	22,906
Pension and Postretirement Plans, Tax	(736)	(7,553)	(1,768)	(8,560)
Pension and postretirement, effect of exchange rates	(651)	536	(537)	(201)
Pension and Postretirement Plans, Net Change	(10)	13,202	1,829	14,145
Unrealized Gain on Hedging Activities, Change in Period	1,870	(4,635)	2,080	(1,811)
Unrealized Gains on Hedging Activities, Tax	(337)	514	(309)	204
Unrealized gains on hedging activities, effect of exchange rates	(71)	187	(21)	165
Unrealized gains on Hedging Activities, Net Change	1,462	(3,934)	1,750	(1,442)
Other Comprehensive Income (Loss), Change in Period	25,631	(17,939)	7,024	18,070
Other Comprehensive Income (Loss), Tax	(1,073)	(7,039)	(2,077)	(8,356)
Other Comprehensive Income, Effect of Exchange Rates	(722)	723	(558)	(36)
Other Comprehensive Income (Loss)	$ 23,836	$ (24,255)	$ 4,389	$ 9,678