Derivatives and Hedging Activities (Derivative Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Foreign exchange contracts | Accrued expenses and other current liabilities | Fair Value  of Derivatives Designated  as Hedge Instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 0	$ 0
Foreign exchange contracts | Accrued expenses and other current liabilities | Fair Value  of Derivatives Not Designated as  Hedge Instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	23	26
Interest rate swap agreement | Other long-term liabilities | Fair Value  of Derivatives Designated  as Hedge Instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	8,489	9,433
Interest rate swap agreement | Other long-term liabilities | Fair Value  of Derivatives Not Designated as  Hedge Instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 0	$ 0