Derivatives and Hedging Activities (Derivative Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	$ 250	$ 157
Foreign Exchange Contract [Member] | Prepaid Expenses and Other Current Assets [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Foreign Exchange Contract [Member] | Prepaid Expenses and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	250	157
Foreign Exchange Contract [Member] | Accrued Liabilities And Other Current Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	0
Foreign Exchange Contract [Member] | Accrued Liabilities And Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	196	156
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,797	1,604
Interest Rate Swap [Member] | Other Noncurrent Assets [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,797	1,604
Interest Rate Swap [Member] | Other Noncurrent Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	$ 0	$ 0