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Derivatives (Details) (Options, Cash flow hedges)
In Thousands, unless otherwise specified
Jun. 30, 2014
Brazilian Real calls
BRL
Jun. 30, 2014
Brazilian Real calls
Level 2
USD ($)
Jun. 30, 2013
Brazilian Real calls
Level 2
USD ($)
Jun. 30, 2014
Brazilian Real puts
BRL
Jun. 30, 2014
Brazilian Real puts
Level 2
USD ($)
Jun. 30, 2013
Brazilian Real puts
Level 2
USD ($)
Derivative [Line Items]            
Notional amount 78,000     (78,000)    
Fair value   $ 432 $ 365   $ (46) $ (1,004)