Stock-Based Compensation (Total Stock-Based Compensation Expense Included in Consolidated Statement of Income) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 3,324	$ 3,224	$ 8,547	$ 7,360
Income Tax Benefit	(713)	(1,231)	(3,246)	(3,238)
Net Stock-Based Compensation Expense	2,611	1,993	5,301	4,122
Cost of Educational Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	312	302	767	696
Student Services And Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 3,012	$ 2,922	$ 7,780	$ 6,664

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901

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