Hedging (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair value - assets	$ 2,934	$ 2,011
Fair value - liabilities	(617)	0
Offsetting Derivative Assets [Abstract]
Gross Amounts Recognized	2,934	2,011
Gross Amounts Offset	0	0
Gross Amount Presented	2,934us-gaap_DerivativeAssets	2,011us-gaap_DerivativeAssets
Gross Amount Not Offset	(617)	0
Legal Offset	2,317	2,011
Offsetting Derivative Liabilities [Abstract]
Gross Amounts Recognized	(617)
Gross Amounts Offset	0
Gross Amount Presented	617us-gaap_DerivativeLiabilities
Gross Amount Not Offset	617
Legal Offset	0
Foreign Currency Forward Contract \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	88,939	33,724
Euro \| Foreign Currency Forward Contract \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	34,749	20,209
British pound sterling \| Foreign Currency Forward Contract \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	33,696	13,515
Australian dollar \| Foreign Currency Forward Contract \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	20,494	0
Prepaid and other current assets
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair value - assets	2,934	2,011
Other liabilities, current portion
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair value - liabilities	(282)	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	$ (335)

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

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