Hedging (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Net carrying value	$ 2,011	$ 0
Foreign currency forward contracts
Foreign Currency Cash Flow Hedge Derivative at Fair Value [Abstract]
Fair value - assets	2,011	0
Fair value - liabilities	0	(23)
Net carrying value	2,011	(23)
Foreign currency forward contracts \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	33,724	17,468
Foreign currency forward contracts \| Euro \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	20,209	17,468
Foreign currency forward contracts \| British Pound Sterling \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of foreign currency forward contract	$ 13,515	$ 0

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(b),(c)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments.

+ References

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