Accumulated Other Comprehensive Income (Loss) by Component (Changes in Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 71,619	$ 125,156
OCI before reclassifications	(51,259)	6,506
Amount reclassified from accumulated OCI	(101)	184
Other Comprehensive Income (Loss)	(51,360)	6,690
Ending Balance	20,259	131,846
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	86,236	143,845
OCI before reclassifications	(68,154)	6,103
Amount reclassified from accumulated OCI	0	0
Other Comprehensive Income (Loss)	(68,154)	6,103
Ending Balance	18,082	149,948
Accumulated Long-Term Notes Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(6,465)	(12,566)
OCI before reclassifications	14,776	545
Amount reclassified from accumulated OCI	0	0
Other Comprehensive Income (Loss)	14,776	545
Ending Balance	8,311	(12,021)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(7,601)	(5,414)
OCI before reclassifications	53	484
Amount reclassified from accumulated OCI	41	58
Other Comprehensive Income (Loss)	94	542
Ending Balance	(7,507)	(4,872)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(551)	(709)
OCI before reclassifications	2,066	(626)
Amount reclassified from accumulated OCI	(142)	126
Other Comprehensive Income (Loss)	1,924	(500)
Ending Balance	$ 1,373	$ (1,209)