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Derivatives and Hedging Activities (Derivative Contracts and Changes in Underlying Value of the Foreign Currency Exposures) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
General Discussion of Derivative Instruments and Hedging Activities [Abstract]        
Net foreign exchange derivative contract (gains) losses $ 121 $ (199) $ 942 $ (959)
Net foreign currency transactional and re-measurement (gains) losses 473 507 (160) 1,879
Net foreign currency (gains) losses $ 594 $ 308 $ 782 $ 920