Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (4,495)	$ (8,446)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(75,520)	(1,018)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	5,082	7,280
Other Comprehensive Income (Loss), before Tax	(70,438)	6,262
Income tax expense	(4,315)	(2,311)
Other Comprehensive Income (Loss), Net of Tax	(74,753)	3,951	3,581
Ending Balance	(79,248)	(4,495)	(8,446)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(74,758)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0
Other Comprehensive Income (Loss), before Tax	(74,758)
Income tax expense	(2,734)
Other Comprehensive Income (Loss), Net of Tax	(77,492)
Ending Balance	(77,492)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(4,495)	(8,446)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	5,082	7,280
Other Comprehensive Income (Loss), before Tax	4,320	6,262
Income tax expense	(1,581)	(2,311)
Other Comprehensive Income (Loss), Net of Tax	2,739	3,951
Ending Balance	(1,756)	(4,495)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	$ (762)	$ (1,018)