Other (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 OptionPlan Contract	Mar. 31, 2014 OptionPlan Contract
Other general income - net
Provisions for environmental matters - net	$ 1,050	$ (434)
Gain on disposition of assets	(2,723)	(138)
Total	(1,673)	(572)
Other (income) expense - net
Dividend and royalty income	(1,081)	(1,051)
Net expense from financing activities	2,967	2,922
Foreign currency transaction related losses	1,138	2,858
Other income	(5,497)	(6,306)
Other expense	2,228	2,080
Total	$ (245)	$ 503
Number of foreign currency option outstanding	0	0
Number of foreign forward contracts outstanding	0	0