Other (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) Contract OptionPlan	Jun. 30, 2014 USD ($) Contract OptionPlan	Jun. 30, 2015 USD ($) Contract OptionPlan	Jun. 30, 2014 USD ($) Contract OptionPlan
Other general expense - net
Provisions for environmental matters - net	$ 10,510	$ 259	$ 11,560	$ (175)
(Gain) loss on disposition of assets	(539)	511	(3,262)	373
Total	9,971	770	8,298	198
Other expense (income) - net
Dividend and royalty income	(1,039)	(1,195)	(2,120)	(2,246)
Net expense from financing activities	2,197	2,547	5,164	5,469
Foreign currency transaction related losses (gains)	1,722	(1,830)	2,860	1,028
Other income	(4,843)	(6,973)	(10,340)	(13,279)
Other expense	2,640	2,304	4,868	4,384
Total	$ 677	$ (5,147)	$ 432	$ (4,644)
Number of foreign currency option outstanding | OptionPlan	0	0	0	0
Number of foreign forward contracts outstanding | Contract	0	0	0	0