Other, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Income and Expenses [Abstract]
Impairment of equity securities	$ (20)	$ (31)	$ (20)	$ (1,545)
Foreign exchange loss	(5,656)	(2,056)	(5,819)	(4,262)
Gain on sale of assets	2,812	107	4,486	63
Other	1,007	(872)	810	382
Other, net	$ (1,857)	$ (2,852)	$ (543)	$ (5,362)