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Summary of Significant Accounting Policies, Recently Issued and Recently Adopted Accounting Standards (Tables) | 12 Months Ended
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Apr. 30, 2020
Summary of Significant Accounting Policies, Recently Issued, and Recently Adopted Accounting Standards [Abstract] |
Net Sales Return Reserves by Balance Sheet Account | The reserves are reflected in the following accounts of the Consolidated Statements of Financial Position – increase (decrease):
|  | 2020 |  |  | 2019 |
Increase in Inventories, net |  | $ | 8,686 |  |  | $ | 3,739 |
Decrease in Accrued royalties |  | $ | (4,441 | ) |  | $ | (3,653 | )
Increase in Contract liabilities |  | $ | 32,769 |  |  | $ | 25,934 |
Print book sales return reserve net liability balance |  | $ | (19,642 | ) |  | $ | (18,542 | )

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- Definition Tabular disclosure of net sales return reserves as reflected in accounts in Consolidated Statements of Financial Position. + References No definition available. + Details
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