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Product Development Assets | 12 Months Ended
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Apr. 30, 2020
Product Development Assets [Abstract] |
Product Development Assets | Note 9 – Product Development Assets Product development assets consisted of the following at April 30:
|  | 2020 |  |  | 2019 |
Book Composition Costs |  | $ | 18,744 |  |  | $ | 19,197 |
Software Costs |  |  | 28,995 |  |  |  | 38,048 |
Content Development Costs |  |  | 5,904 |  |  |  | 5,225 |
Total |  | $ | 53,643 |  |  | $ | 62,470 |
Product development assets include $4.9 million and $4.3 million of work-in-process as of April 30, 2020 and 2019, respectively, mainly for book composition costs. Product development assets are net of accumulated amortization of $244.1 million and $236.5 million as of April 30, 2020 and 2019, respectively.

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