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Derivatives (Foreign Exchange Contracts) (Details) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($) | Sep. 30, 2014 Sells euro (EUR)/Buys USD Forward USD ($) | Sep. 30, 2014 Sells euro (EUR)/Buys USD Forward EUR (€) | Sep. 30, 2014 Sells INR/Buys USD Forward USD ($) | Sep. 30, 2014 Sells INR/Buys USD Forward INR | Sep. 30, 2014 Sells pound sterling (GBP)/Buys USD Forward USD ($) | Sep. 30, 2014 Sells pound sterling (GBP)/Buys USD Forward GBP (£) | Sep. 30, 2014 Sells Canadian dollar (CAD)/Buys USD Forward USD ($) | Sep. 30, 2014 Sells Canadian dollar (CAD)/Buys USD Forward CAD
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | $ 39,914,000 | € 31,600,000 | $ 7,384,000 | 456,000,000 | $ 973,000 | £ 600,000 | $ 36,149,000 | 40,500,000
Maturity of Foreign Currency Derivatives |  |  |  |  | Oct. 03, 2014 | Oct. 03, 2014 | Jun. 30, 2015 | Jun. 30, 2015 | Oct. 03, 2014 | Oct. 03, 2014 | Oct. 03, 2014 | Oct. 03, 2014
Foreign currency transaction gain (loss) | $ 100,000 | $ (1,100,000) | $ 400,000 | $ (1,500,000) |  |  |  |  |  |  |  |

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- 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 + Details
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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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894 Reference 2: 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 3: 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 + Details
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