Foreign Exchange Forward Contracts (Narratives) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Foreign currency transaction realized gain (loss)	$ (300,000)	$ 800,000	$ (1,500,000)
Maximum
Derivative [Line Items]
Foreign currency transaction realized gain (loss)				$ 100,000
Not Designated as Hedging Instrument | Forward Foreign Currency Contracts
Derivative [Line Items]
Notional principal amount of forward foreign currency contracts	$ 6,700,000		$ 6,700,000
Maximum maturities for contracts			90 days
Derivative instruments outstanding		$ 0		$ 0