Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Foreign Currency Transaction Gain (Loss), before Tax	$ (5,916)	$ (15,627)	$ 9,868	$ (29,797)
Other Expense Disclosure, Nonoperating	26	4	-220	482
Gain (Loss) on Disposition of Business	$ (800)	$ 0	$ (800)	$ 0
Gain (Loss) on Investments	$ 682	$ 0	$ 682	$ 0