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Derivative Financial Instruments (Details) € in Thousands, £ in Thousands, SGD in Thousands, PLN in Thousands, CAD in Thousands, BRL in Thousands, AUD in Thousands, $ in Thousands | Oct. 31, 2015 CAD | Oct. 31, 2015 BRL | Oct. 31, 2015 AUD | Oct. 31, 2015 PLN | Oct. 31, 2015 USD ($) | Oct. 31, 2015 EUR (€) | Oct. 31, 2015 SGD | Oct. 31, 2015 GBP (£) | May. 02, 2015 CAD | May. 02, 2015 BRL | May. 02, 2015 AUD | May. 02, 2015 PLN | May. 02, 2015 USD ($) | May. 02, 2015 EUR (€) | May. 02, 2015 SGD | May. 02, 2015 GBP (£)
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Recurring Basis | Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives-currency forward contract, asset |  |  |  |  | $ 87 |  |  |  |  |  |  |  |  |  |  |
Derivatives - currency forward contracts, liability |  |  |  |  |  |  |  |  |  |  |  |  | $ 283 |  |  |
U.S. Dollars/Australian Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  | AUD 4,384 |  | 3,124 |  |  |  |  |  | AUD 1,918 |  | 1,487 |  |  |
U.S. Dollars/Japanese Yen |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  |  | PLN 16,707 | 139 |  |  |  |  |  |  | PLN 91,282 | 764 |  |  |
U.S. Dollars/Canadian Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: | CAD 500 |  |  |  | 380 |  |  |  | CAD 4,923 |  |  |  | 4,129 |  |  |
U.S. Dollars/British Pounds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  |  |  | 2,037 |  |  | £ 1,320 |  |  |  |  | 1,679 |  |  | £ 1,123
U.S. Dollars/Singapore Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  |  |  | 392 |  | SGD 534 |  |  |  |  |  | 1,176 |  | SGD 1,601 |
U.S. Dollars/New Zealand Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  | BRL 261 |  |  | 164 |  |  |  |  | BRL 0 |  |  | 0 |  |  |
U.S. Dollars/Euros |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  |  |  | 544 | € 482 |  |  |  |  |  |  | (229) | € (174) |  |
U.S. Dollars/Swiss Franc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  |  |  | $ 3,817 | € 3,696 |  |  |  |  |  |  | $ 5,662 | € 5,500 |  |

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