Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

Name:	us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Derivatives - Foreign Currency Forward Contracts (Details) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended			0 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Nov. 29, 2013 30 Day Forward Contract EURO EUR (€)	Nov. 30, 2012 30 Day Forward Contract EURO	Nov. 28, 2014 30 Day Forward Contract EURO EUR (€)	Nov. 29, 2013 30 Day Forward Contract GBP GBP (£)	Nov. 30, 2012 30 Day Forward Contract GBP	Nov. 28, 2014 30 Day Forward Contract GBP GBP (£)
Derivatives, Fair Value [Line Items]
Forward Contract Term				30 days	30 days		30 days	30 days
Derivative, Notional Amount				€ 494		€ 899	£ 847		£ 572
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 36	$ (202)	$ (11)