Hedging (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair Value - assets		$ 2,011
Fair Value - liabilities		0
Offsetting Derivative Assets [Abstract]
Gross Amounts Recognized	$ 1,087	2,011
Gross Amounts Offset	0	0
Gross Amount Presented	1,087	2,011
Gross Amount Not Offset	(1,087)	0
Legal Offset	0	2,011
Offsetting Derivative Liabilities [Abstract]
Gross Amounts Recognized	(3,050)
Gross Amounts Offset	0
Gross Amount Presented	(3,050)
Gross Amount Not Offset	1,087
Legal Offset	(1,963)
Foreign Currency Forward Contract | Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	211,749	33,724
Euro | Foreign Currency Forward Contract | Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	102,796	20,209
British pound sterling | Foreign Currency Forward Contract | Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	82,960	13,515
Australian dollar | Foreign Currency Forward Contract | Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	25,993	0
Prepaid and other current assets
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair Value - assets	1,087	2,011
Other liabilities, current portion
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair Value - liabilities	(2,737)	$ 0
Other assets
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair Value - assets	0
Other liabilities, excluding current portion
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair Value - liabilities	$ (313)