Income Taxes (Reconciliation Of The Effective Income Tax Rate) (Details)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State and local income taxes	0.70%	3.20%	3.10%
Research and development tax credit	(1.70%)	(0.80%)	0.00%
Net windfall tax benefits - stock-based compensation	(0.10%)	(0.60%)	(0.80%)
Other	0.40%	0.60%	0.20%
Effective rate	20.30%	23.40%	23.50%