Schedule Of Differences Between Income Taxes At Statutory Federal Rate And Income Taxes Reported In Consolidated Statements of Comprehensive Income (Detail)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Income Tax Rate Reconciliation [Line Items]
Federal income tax expense at the statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	1.60%	1.70%	2.70%
Research and development credits, net of the federal tax on state credits	(0.20%)	(1.00%)	(1.30%)
Uncertain tax positions, net of federal benefit on state positions	(0.10%)	0.20%	0.20%
Incentive stock option and employee stock purchase plan expense	(0.30%)	(0.50%)	1.00%
Change in valuation allowance	1.20%	0.70%	1.00%
Basis difference, disposition of foreign subsidiary	(1.90%)	0.00%	0.00%
Other, net	1.30%	0.80%	0.60%
Effective income tax rate, continuing operations, total	36.60%	36.90%	39.20%