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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

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