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Goodwill and Other Intangibles - Narrative (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 01, 2022 | Feb. 29, 2024 | Nov. 30, 2023 | Feb. 29, 2024 | Feb. 28, 2023 | May 31, 2023
Goodwill [Line Items] |  |  |  |  |  |
Additions |  |  |  | $ 0 | $ 7,000,000.0 | $ 7,600,000
Goodwill, Impairment Loss |  |  |  | 0 | 0 | 0
Amortizable intangible assets acquired |  | $ 200,000 | $ 5,800,000 | $ 6,000,000.0 | 4,100,000 | 4,100,000
Useful life |  | 6 years |  | 6 years |  |
Impairment of intangible assets (excluding goodwill) |  |  |  | $ 0 | $ 0 | $ 0
Learning Ovations, Inc. |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Amortizable intangible assets acquired | $ 4,100,000 |  |  |  |  |
Useful life |  | 7 years |  | 7 years |  |
Educational Program |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Useful life |  | 8 years |  | 8 years |  |
Children's Book Publishing & Distribution |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Useful life |  | 5 years |  | 5 years |  |
Education |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Additions | 7,600,000 |  |  |  |  |
Education | Learning Ovations, Inc. |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Additions | $ 7,600,000 |  |  |  |  |

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