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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 |  |  |  |  |

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- Definition 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 + Details
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