Accounting Policies (Schedule of Foreign Currency Transaction Gains and Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Selling, general, and administrative expense	$ (5,090)	$ (3,931)	$ 341
Other expense/(income), net	1,496	(6,379)	5,227
Total transaction (gains)/losses	(3,594)	(10,310)	5,568
Gain/(loss) on long-term intercompany loans	$ (5,225)	$ 5,317	$ (18,052)