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Stock-Based Compensation (Total Stock-Based Compensation Expense Included in Consolidated Statement of Income) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-Based Compensation Expense | $ 14,584 | $ 13,217 | $ 14,499
Income Tax Benefit | (4,611) | (4,685) | (5,829)
Net Stock-Based Compensation Expense | 9,973 | 8,532 | 8,670
Cost of Educational Services |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-Based Compensation Expense | 1,334 | 1,239 | 4,464
Student Services And Administrative Expense |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-Based Compensation Expense | $ 13,250 | $ 11,978 | 9,487
Restructuring Expense [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-Based Compensation Expense |  |  | $ 548

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