Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Beginning Balance	$ (37,342)			$ (54,321)
Other comprehensive (loss) income before reclassifications (1)	(50,033)			(33,393)
Amounts reclassified from AOCI	540			879
Net current-period other comprehensive (loss) income	(49,493)			(32,514)
Balance at September 30, 2014	(86,835)			(86,835)
Accumulated Translation Adjustment [Member]
Beginning Balance	18,951			(2,409)
Other comprehensive (loss) income before reclassifications (1)	(52,761)	[1]		(31,401)	[2]
Amounts reclassified from AOCI	0			0
Net current-period other comprehensive (loss) income	(52,761)			(31,401)
Balance at September 30, 2014	(33,810)			(33,810)
Other comprehensive (loss) income, translation adjustment, net of tax, attributable to noncontrolling interests	201			(353)
Net Investment Hedging [Member]
Beginning Balance	(5,456)			(1,884)
Other comprehensive (loss) income before reclassifications (1)	2,437			(1,135)
Amounts reclassified from AOCI	0			0
Net current-period other comprehensive (loss) income	2,437			(1,135)
Balance at September 30, 2014	(3,019)			(3,019)
Interest Rate Swaps [Member]
Beginning Balance	(750)			(960)
Other comprehensive (loss) income before reclassifications (1)	228		66	547		608
Amounts reclassified from AOCI	(51)		(48)	(160)		(159)
Net current-period other comprehensive (loss) income	177		18	387		449
Balance at September 30, 2014	(573)			(573)
Pension Benefits [Member]
Beginning Balance	(51,102)			(52,027)
Other comprehensive (loss) income before reclassifications (1)	0			0
Amounts reclassified from AOCI	464			1,389
Net current-period other comprehensive (loss) income	464			1,389
Balance at September 30, 2014	(50,638)			(50,638)
Available-for-sale Securities [Member]
Beginning Balance	735			2,679
Other comprehensive (loss) income before reclassifications (1)	63		277	(1,404)		2,327
Amounts reclassified from AOCI	127		(1,012)	(350)		(1,139)
Net current-period other comprehensive (loss) income	190			(1,754)
Balance at September 30, 2014	925			925
Other Comprehensive Income - Other [Member]
Beginning Balance	280			280
Other comprehensive (loss) income before reclassifications (1)	0			0
Amounts reclassified from AOCI	0			0
Net current-period other comprehensive (loss) income	0		8	0		22
Balance at September 30, 2014	$ 280			$ 280

[1] Other comprehensive (loss) income before reclassifications within the translation component excludes $201 of translation attributable to noncontrolling interests.

[2] Other comprehensive (loss) income before reclassifications within the translation component excludes $(353) of translation attributable to noncontrolling interests.