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Derivatives (Details) (Options, Cash flow hedges) In Thousands, unless otherwise specified | Sep. 30, 2014 Brazilian Real calls BRL | Sep. 30, 2014 Brazilian Real calls Level 2 USD ($) | Jun. 30, 2014 Brazilian Real calls Level 2 USD ($) | Sep. 30, 2014 Brazilian Real puts BRL | Sep. 30, 2014 Brazilian Real puts Level 2 USD ($) | Jun. 30, 2014 Brazilian Real puts Level 2 USD ($)
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Derivative [Line Items] |  |  |  |  |  |
Notional amount | 78,000 |  |  | (78,000) |  |
Fair value |  | $ 174 | $ 432 |  | $ (217) | $ (46)

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