Income Taxes - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax Rate from Continuing Operations (Detail)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income taxes at federal statutory rates	21.00%	28.00%	35.00%
State income tax, net of federal tax benefit	5.90%	5.60%	4.90%
Research and development credits	(4.50%)	(5.10%)	(6.10%)
Excess tax benefits on stock compensation	(4.50%)	(18.50%)	(13.10%)
Domestic manufacturing deduction	0.00%	(2.00%)	(3.90%)
Deemed repatriation of foreign earnings	0.00%	(1.90%)	0.10%
Foreign tax credits	(0.10%)	(0.30%)	(0.20%)
Equity compensation	2.00%	1.70%	1.80%
Change in the fair value of the liability related to the LNX earn-out	0.30%	0.30%	(0.60%)
Effective Income Tax Rate Reconciliation, Acquired Tax Attributes	0.00%	(8.70%)	0.00%
Benefit from tax rate changes	0.00%	(2.30%)	0.00%
Acquisition costs	0.10%	1.40%	0.90%
Other	1.00%	1.40%	0.90%
Effective income tax rate from continuing operation	21.40%	4.00%	19.90%