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Goodwill and Intangible Assets, Intangible Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2021 | Apr. 30, 2021
--- | --- | ---
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | $ 843,934 | $ 885,261 | [2]
Intangible assets with indefinite lives [Abstract] |  |  |  |
Intangible assets with indefinite lives |  | 126,102 | 130,041 | [2]
Intangible assets (excluding goodwill) [Abstract] |  |  |  |
Total intangible assets, net |  | 970,036 | 1,015,302 | [2]
Brands and Trademarks [Member] |  |  |  |
Intangible assets with indefinite lives [Abstract] |  |  |  |
Intangible assets with indefinite lives |  | 37,000 | 37,000 | [2]
Accumulated impairment |  |  | 93,100 |
Content and Publishing Rights [Member] |  |  |  |
Intangible assets with indefinite lives [Abstract] |  |  |  |
Intangible assets with indefinite lives |  | 89,102 | 93,041 | [2]
Content and Publishing Rights [Member] |  |  |  |
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | 537,493 | 564,229 | [2]
Customer Relationships [Member] |  |  |  |
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | 254,297 | 266,477 | [2]
Developed Technology [Member] |  |  |  |
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | 34,206 | 34,961 | [2]
Accumulated impairment |  |  | 2,800 |
Brands and Trademarks [Member] |  |  |  |
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | 17,858 | 19,536 | [2]
Covenants Not to Compete [Member] |  |  |  |
Intangible assets with definite lives, net [Abstract] |  |  |  |
Intangible assets with definite lives, net | [1] | $ 80 | $ 58 | [2]
[1] | Refer to Note 3, “Acquisitions,” for more information related to the acquisition that occurred in the six months ended October 31, 2021.
[2] | The developed technology balance as of April 30, 2021 is presented net of accumulated impairments and write-offs of $2.8 million. The indefinite-lived brands and trademarks as of April 30, 2021 is net of accumulated impairments of $93.1 million.

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