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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, 2018
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 – (decrease) increase as of April 30:
|  | 2018 |  |  | 2017 |
Accounts Receivable |  | $ | (28,302 | ) |  | $ | (34,769 | )
Inventories |  | $ | 4,626 |  |  | $ | 4,727 |
Royalties Payable |  | $ | (5,048 | ) |  | $ | (5,741 | )
Decrease in Net Assets |  | $ | (18,628 | ) |  | $ | (24,300 | )

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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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