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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
Sep. 30, 2018
Sep. 30, 2017
General Discussion of Derivative Instruments and Hedging Activities [Abstract]    
Net foreign exchange derivative contract (gains) losses $ 16 $ 821
Net foreign currency transactional and re-measurement (gains) losses 81 (633)
Net foreign currency (gains) losses $ 97 $ 188