Stock-Based Compensation (Total Stock-Based Compensation Expense Included in Consolidated Statement of Income) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 3,595	$ 2,781	$ 11,247	$ 11,328
Income Tax Benefit	(910)	(642)	(2,077)	(3,887)
Net Stock-Based Compensation Expense	2,685	2,139	9,170	7,441
Cost of Educational Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	338	260	1,076	1,027
Student Services And Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 3,257	$ 2,521	$ 10,171	$ 10,301

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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