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Goodwill and Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023
--- | --- | ---
Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 217,991 | $ 217,991
Amortizable Intangible Assets, Accumulated Amortization | (169,190) | (158,513)
Indefinite-lived Intangible Assets, Gross Carrying Amount | 752,860 | 752,860
Student Relationships |  |
Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | 161,900 | 161,900
Amortizable Intangible Assets, Accumulated Amortization | $ (145,348) | (137,476)
Amortizable Intangible Assets, Weighted Average Amortization Period | 3 years |
Curriculum |  |
Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 56,091 | 56,091
Amortizable Intangible Assets, Accumulated Amortization | $ (23,842) | (21,037)
Amortizable Intangible Assets, Weighted Average Amortization Period | 5 years |
Walden trade name |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | $ 119,560 | 119,560
AUC trade name |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 17,100 | 17,100
RUSM trade name |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 3,500 | 3,500
RUSVM trade name |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 1,600 | 1,600
Chamberlain Title IV eligibility and accreditations |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 1,200 | 1,200
Walden Title IV eligibility and accreditations |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 495,800 | 495,800
AUC Title IV eligibility and accreditations |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 100,000 | 100,000
RUSM Title IV eligibility and accreditations |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | 11,600 | 11,600
RUSVM Title IV eligibility and accreditations |  |
Intangible Assets [Line Items] |  |
Indefinite-lived Intangible Assets, Gross Carrying Amount | $ 2,500 | $ 2,500

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