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Derivatives - Schedule of Unsettled Purchased Foreign Currency Forward Contracts (Details) - Long [Member] - Foreign currency forward contracts [Member] € in Thousands, ₨ in Thousands, £ in Thousands, SGD in Thousands, PLN in Thousands, AUD in Thousands, $ in Thousands | Mar. 31, 2017 GBP (£) | Mar. 31, 2017 AUD | Mar. 31, 2017 PLN | Mar. 31, 2017 USD ($) | Mar. 31, 2017 EUR (€) | Mar. 31, 2017 SGD | Dec. 31, 2016 GBP (£) | Dec. 31, 2016 AUD | Dec. 31, 2016 INR (₨) | Dec. 31, 2016 PLN | Dec. 31, 2016 USD ($) | Dec. 31, 2016 EUR (€) | Dec. 31, 2016 SGD
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Australian Dollar [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  | AUD 23,500 |  | $ 17,582 |  |  |  | AUD 17,000 |  |  | $ 12,574 |  |
Average contract rate | 0.7482 | 0.7482 | 0.7482 | 0.7482 | 0.7482 | 0.7482 | 0.7396 | 0.7396 | 0.7396 | 0.7396 | 0.7396 | 0.7396 | 0.7396
Euro [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  |  |  |  |  | $ 2,031 | € 1,800 |
Average contract rate |  |  |  |  |  |  | 1.1283 | 1.1283 | 1.1283 | 1.1283 | 1.1283 | 1.1283 | 1.1283
British Pound Sterling [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  | $ 28,356 | € 22,050 |  | £ 17,750 |  |  |  | $ 23,691 |  |
Average contract rate | 1.2860 | 1.2860 | 1.2860 | 1.2860 | 1.2860 | 1.2860 | 1.3347 | 1.3347 | 1.3347 | 1.3347 | 1.3347 | 1.3347 | 1.3347
Indian Rupee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount | £ 1,392,000 |  |  | $ 20,280 |  |  |  |  | ₨ 1,174,500 |  | $ 16,786 |  |
Average contract rate | 0.0146 | 0.0146 | 0.0146 | 0.0146 | 0.0146 | 0.0146 | 0.0143 | 0.0143 | 0.0143 | 0.0143 | 0.0143 | 0.0143 | 0.0143
Polish Zloty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  | PLN 243,500 | $ 60,949 |  |  |  |  |  | PLN 258,250 | $ 64,778 |  |
Average contract rate | 0.2503 | 0.2503 | 0.2503 | 0.2503 | 0.2503 | 0.2503 | 0.2508 | 0.2508 | 0.2508 | 0.2508 | 0.2508 | 0.2508 | 0.2508
Singapore Dollar [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  | $ 43,546 |  | SGD 60,500 |  |  |  |  | $ 34,383 |  | SGD 47,700
Average contract rate | 0.7198 | 0.7198 | 0.7198 | 0.7198 | 0.7198 | 0.7198 | 0.7208 | 0.7208 | 0.7208 | 0.7208 | 0.7208 | 0.7208 | 0.7208

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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 Average contractual rate at which a foreign currency can be purchased or sold. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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