Stockholder's Equity (Details 2) (USD $)	Mar. 31, 2015		Dec. 31, 2014	Mar. 31, 2014		Dec. 31, 2013
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized losses on cash flow hedges	$ (2,809,000)		$ (650,000)	$ (4,619,000)		$ (5,059,000)
Unrecognized losses on equity investments	(11,687,000)		0	160,000		(389,000)
Unrecognized gains (losses) on foreign currency translation	(91,411,000)		(74,770,000)	(19,508,000)		(17,631,000)
Unrecognized actuarial losses	(1,589,000)		(1,589,000)	(1,452,000)		(1,452,000)
Totals	(107,496,000)		(77,009,000)	(25,419,000)		(24,531,000)
Other comprehensive income before reclassification adjustments
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized losses on cash flow hedges	(2,625,000)			(3,000)
Unrecognized losses on equity investments	(11,687,000)			549,000
Unrecognized gains (losses) on foreign currency translation	(16,641,000)			(1,877,000)
Unrecognized actuarial losses	0			0
Totals	(30,953,000)			(1,331,000)
Reclassification amount to net income
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized losses on cash flow hedges	466,000	[1]		443,000	[1]
Unrecognized losses on equity investments	0			0
Unrecognized gains (losses) on foreign currency translation	0	[1]		0
Unrecognized actuarial losses	0			0
Totals	466,000			443,000
Net current period other comprehensive income
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized losses on cash flow hedges	(2,159,000)			440,000
Unrecognized losses on equity investments	(11,687,000)			549,000
Unrecognized gains (losses) on foreign currency translation	(16,641,000)			(1,877,000)
Unrecognized actuarial losses	0			0
Totals	$ (30,487,000)			$ (888,000)

[1] (1) Please see note 11 for additional information.