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Derivatives - Schedule of Unsettled Purchased Foreign Currency Forward Contracts (Details) - Foreign currency forward contracts [Member] € in Thousands, ₨ in Thousands, £ in Thousands, PLN in Thousands, AUD in Thousands, $ in Thousands | Jun. 30, 2015 PLN | Jun. 30, 2015 AUD | Jun. 30, 2015 INR (₨) | Jun. 30, 2015 USD ($) | Jun. 30, 2015 GBP (£) | Jun. 30, 2015 EUR (€) | Dec. 31, 2014 PLN | Dec. 31, 2014 AUD | Dec. 31, 2014 INR (₨) | Dec. 31, 2014 USD ($) | Dec. 31, 2014 GBP (£) | Dec. 31, 2014 EUR (€)
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Australian Dollar [Member] | Short [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount |  | AUD 6,270 |  | $ 4,970 |  |  |  | AUD 6,750 |  | $ 5,838 |  |
Average contract rate | 0.7927 | 0.7927 | 0.7927 | 0.7927 | 0.7927 | 0.7927 | 0.8649 | 0.8649 | 0.8649 | 0.8649 | 0.8649 | 0.8649
Australian Dollar [Member] | Long [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount |  | AUD 2,740 |  | $ 2,103 |  |  |  |  |  |  |  |
Average contract rate | 0.7675 | 0.7675 | 0.7675 | 0.7675 | 0.7675 | 0.7675 |  |  |  |  |  |
Euro [Member] | Long [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount |  |  |  | $ 17,375 |  | € 14,000 |  |  |  | $ 38,777 |  | € 30,200
Average contract rate | 1.2411 | 1.2411 | 1.2411 | 1.2411 | 1.2411 | 1.2411 | 1.2840 | 1.2840 | 1.2840 | 1.2840 | 1.2840 | 1.2840
British Pound Sterling [Member] | Long [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount |  |  |  | $ 31,659 | £ 20,300 |  |  |  |  | $ 37,343 | £ 22,950 |
Average contract rate | 1.5596 | 1.5596 | 1.5596 | 1.5596 | 1.5596 | 1.5596 | 1.6271 | 1.6271 | 1.6271 | 1.6271 | 1.6271 | 1.6271
Indian Rupee [Member] | Long [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount |  |  | ₨ 1,225,000 | $ 18,671 |  |  |  |  | ₨ 1,205,000 | $ 18,748 |  |
Average contract rate | 0.0152 | 0.0152 | 0.0152 | 0.0152 | 0.0152 | 0.0152 | 0.0156 | 0.0156 | 0.0156 | 0.0156 | 0.0156 | 0.0156
Polish Zloty [Member] | Long [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative notional amount | PLN 186,000 |  |  | $ 51,611 |  |  | PLN 171,000 |  |  | $ 52,821 |  |
Average contract rate | 0.2775 | 0.2775 | 0.2775 | 0.2775 | 0.2775 | 0.2775 | 0.3089 | 0.3089 | 0.3089 | 0.3089 | 0.3089 | 0.3089

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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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