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Derivatives (Foreign Exchange Contracts) (Details) € in Thousands, ₨ in Thousands, £ in Thousands, CAD in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 EUR (€)	Sep. 30, 2015 GBP (£)	Sep. 30, 2015 CAD	Sep. 30, 2015 INR (₨)
Derivative [Line Items]
Foreign currency transaction gain (loss)	$ (100)	$ 100	$ (100)	$ 400
Sells Indian rupee (INR)/Buys USD Forward
Derivative [Line Items]
Derivative, Notional Amount	6,553		$ 6,553					₨ 456,000
Maturity of Foreign Currency Derivatives			Dec. 30, 2016
Sells euro (EUR)/Buys USD Forward
Derivative [Line Items]
Derivative, Notional Amount	6,333		$ 6,333		€ 5,700
Maturity of Foreign Currency Derivatives			Oct. 05, 2015
Sells pound sterling (GBP)/Buys USD Forward
Derivative [Line Items]
Derivative, Notional Amount	4,685		$ 4,685			£ 3,000
Maturity of Foreign Currency Derivatives			Oct. 05, 2015
Sells Canadian dollar (CAD)/Buys USD Forward
Derivative [Line Items]
Derivative, Notional Amount	$ 8,353		$ 8,353				CAD 10,500
Maturity of Foreign Currency Derivatives			Oct. 05, 2015

X

- Definition

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

+ References

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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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 830



-SubTopic 20



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 830



-SubTopic 20



-Section 45



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 830



-SubTopic 20



-Section 45



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894

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- Definition

Date the foreign currency exchange rate derivatives mature or expire, in CCYY-MM-DD format.

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