Total Stock-Based Compensation Expense Included in Consolidated Statement of Earnings (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income Tax Benefit	$ (5,142)	$ (5,998)	$ (4,259)
Net Stock-Based Compensation Expense	10,351	12,532	9,992
Cost Of Educational Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	4,958	5,929	4,560
Student Services And Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 10,535	$ 12,601	$ 9,691