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Derivatives and Hedging Activities (Derivative Contracts and Changes in Underlying Value of the Foreign Currency Exposures) (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2011
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
General Discussion of Derivative Instruments and Hedging Activities [Abstract]          
Net foreign exchange derivative contract (gains) losses $ 2,500 $ (2,092) $ (1,666) $ (759) $ 2,863
Net foreign currency transactional and re-measurement (gains) losses   2,237 1,386 1,087 708
Net foreign currency (gains) losses   $ 145 $ 280 $ 328 $ 3,571