Interim Condensed Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 13,367	$ 11,333	$ 29,800	$ 30,070
Other comprehensive (loss) income:
Foreign currency translation adjustment	(11,154)	6,284	(8,549)	(559)
Post Retirement adjustments:
Net gains arising during the period	93	172	262	533
Other comprehensive (loss) income	(11,061)	6,456	(8,287)	(26)
Comprehensive Income	$ 2,306	$ 17,789	$ 21,513	$ 30,044