Derivatives and Hedging Activities (Cash Flow Hedge Included in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Net increase in accumulated other comprehensive (loss) income, net of tax	$ (4,646)
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net interest expense (income) recognized as a result of interest rate swap	799	$ (233)	$ 161
Unrealized (loss) gain in fair value of interest swap rates	(6,900)	(4,159)	1,422
Net increase in accumulated other comprehensive (loss) income	(6,101)	(4,392)	1,583
Income tax effect	1,455	1,115	(494)
Net increase in accumulated other comprehensive (loss) income, net of tax	$ (4,646)	$ (3,277)	$ 1,089