Income Taxes - Effective Income Tax Rate (Details)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
The effective income tax rate differs from the U.S. Federal statutory income tax rate
Federal statutory income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	3.60%	3.80%	3.10%
Foreign tax rate difference	2.10%	1.40%	4.50%
Tax return to provision true-up	(0.70%)	0.00%	(1.10%)
Limit on future stock compensation due to 162(m)	1.70%	2.30%	2.60%
Foreign withholding tax	0.40%	3.30%	0.00%
Other differences	1.50%	1.90%	(0.10%)
Revalue of deferred for change in federal tax rate	0.10%	(0.10%)	(0.60%)
Permanent differences:
— stock based compensation	(2.30%)	(13.60%)	(7.70%)
— current year section 162(m) limitation	0.00%	1.60%	0.00%
— foreign derived intangible income deduction	(0.60%)	(0.50%)	(0.10%)
— tax credits	(1.40%)	(2.30%)	(3.70%)
— meals and entertainment	0.10%	0.40%	0.70%
— other permanent differences	0.90%	1.80%	1.70%
Change in valuation allowance	(1.20%)	0.20%	(0.80%)
Net income tax provision	25.20%	21.20%	19.50%