Stockholder's Equity (Details 4) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized gains (losses) on cash flow hedges	$ (650,000)		$ (5,059,000)		$ (6,957,000)
Unrecognized gains (losses) on equity investments	0		(389,000)		(216,000)
Unrecognized gains (losses) on foreign currency translation	(74,770,000)		(17,631,000)		(881,000)
Unrecognized actuarial losses	(1,589,000)		(1,452,000)		(2,974,000)
Totals	(77,009,000)		(24,531,000)		(11,028,000)
Other comprehensive income before reclassification adjustments
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized gains (losses) on cash flow hedges	2,610,000		(16,000)
Unrecognized gains (losses) on equity investments	389,000		(173,000)
Unrecognized gains (losses) on foreign currency translation	(56,611,000)		(16,750,000)
Unrecognized actuarial losses	(137,000)		1,522,000
Totals	(53,749,000)		(15,417,000)
Reclassification amount to net income
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized gains (losses) on cash flow hedges	1,799,000	[1]	1,914,000	[1]
Unrecognized gains (losses) on equity investments	0		0
Unrecognized gains (losses) on foreign currency translation	(528,000)		0
Unrecognized actuarial losses	0		0
Totals	1,271,000		1,914,000
Net current period other comprehensive income
Summary of accumulated other comprehensive income/(loss) [Line Items]
Unrecognized gains (losses) on cash flow hedges	4,409,000		1,898,000
Unrecognized gains (losses) on equity investments	389,000		(173,000)
Unrecognized gains (losses) on foreign currency translation	(57,139,000)		(16,750,000)
Unrecognized actuarial losses	(137,000)		1,522,000
Totals	$ (52,478,000)		$ (13,503,000)

[1] Please see Note 11 for additional information.