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Risk Management and Derivatives (Outstanding foreign currency derivatives - designated hedge) (Details) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
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Sep. 30, 2013 Designated as Hedging Instrument Foreign exchange contracts Other Expense USD ($) | Sep. 30, 2013 Designated as Hedging Instrument Foreign exchange contracts Other Expense USD ($) | Sep. 30, 2013 Sells INR/Buys USD Forward USD ($) | Sep. 30, 2013 Sells INR/Buys USD Forward RSD
Derivative [Line Items] |  |  |  |
Notional Amount |  |  | $ 7,291 | 456,000
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Effective Portion) | $ 347 | $ 691 |  |

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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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