Nominal or face amount used to calculate payments on the derivative asset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

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- Definition

Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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Derivatives and Hedging Activities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Other current assets [Member] Designated as Hedging Instrument [Member] Cash Flow Hedge [Member] USD ($)	Dec. 31, 2013 Foreign Exchange Contract [Member] Other current assets [Member] Designated as Hedging Instrument [Member] Cash Flow Hedge [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Other current assets [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Other current assets [Member] Not Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2013 Foreign Exchange Contract [Member] Other current assets [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Accrued expenses and other current liabilities [Member] Designated as Hedging Instrument [Member] Cash Flow Hedge [Member] USD ($)	Dec. 31, 2013 Foreign Exchange Contract [Member] Accrued expenses and other current liabilities [Member] Designated as Hedging Instrument [Member] Cash Flow Hedge [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Accrued expenses and other current liabilities [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Foreign Exchange Contract [Member] Accrued expenses and other current liabilities [Member] Not Designated as Hedging Instrument [Member] ILS	Dec. 31, 2013 Foreign Exchange Contract [Member] Accrued expenses and other current liabilities [Member] Not Designated as Hedging Instrument [Member] USD ($)
Derivatives, Fair Value [Line Items]
Assets derivatives - Notional amount					$ 5,760,000	$ 45,000,000	€ 33,900,000	$ 12,490,000
Liability derivatives - Notional amount									38,426,000		18,424,000	66,300,000	54,000,000
Gain (loss) on derivative instrument	4,400,000us-gaap_UnrealizedGainLossOnDerivatives	4,400,000us-gaap_UnrealizedGainLossOnDerivatives
Fair value adjustments on derivatives designated as cash flow hedges	$ (1,396,000)	$ 153,000