Derivatives and Hedging Activities (Cash Flow Hedge Included in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Net increase (decrease) in accumulated other comprehensive income, net of tax	$ 5,833	$ 2,249	$ (4,646)
Interest rate swap agreement
Derivative Instruments, Gain (Loss) [Line Items]
Net interest expense recognized as a result of interest rate swap	2,088	2,250	799
Unrealized gain (loss) in fair value of interest swap rates	5,748	731	(6,900)
Net increase (decrease) in accumulated other comprehensive income (loss)	7,836	2,981	(6,101)
Income tax effect	(2,003)	(732)	1,455
Net increase (decrease) in accumulated other comprehensive income, net of tax	$ 5,833	$ 2,249	$ (4,646)