Accumulated Other Comprehensive Loss (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Unrealized losses on cash flow hedges:
Other Comprehensive Income (Loss), before Tax	$ (4,908)	$ (5,166)	$ (14,773)	$ (15,607)
Other Income/(expense) [Member]
Unrealized losses on available-for-sale securities:
Impairment recorded relating to securities held by the Company's foreign subsidiaries			0	(132)
Equity in Income of Affiliated Companies [Member]
Unrealized losses on cash flow hedges:
Interest rate swaps entered into by the Company's equity method joint venture investees	$ (4,908)	$ (5,166)	$ (14,773)	$ (15,475)