Other, Net (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]
Gain (loss) on extinguishment of debt	$ (10,040)	$ 0	$ (10,040)	$ (271)
Foreign exchange loss	(1,466)	(8,910)	(7,286)	(13,172)
Gain on sale of assets	4,498	333	8,983	396
Gain (loss) on sale of investments	2,965	(12)	2,691	(916)
Impairment of equity securities	0	(483)	(20)	(2,028)
Other	408	179	1,494	1,734
Other, net	$ (3,635)	$ (8,893)	$ (4,178)	$ (14,257)