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Total Stock-Based Compensation Expense Included in Consolidated Statement of Earnings (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income Tax Benefit	$ (5,998)	$ (4,259)	$ (2,907)
Net Stock-Based Compensation Expense	12,532	9,992	7,241
Cost Of Educational Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	5,929	4,560	3,247
Student Services And Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 12,601	$ 9,691	$ 6,901

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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