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Investments in Companies Accounted for Using the Equity Method (Tables) | 12 Months Ended
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Apr. 30, 2023
Investments in Companies Accounted for Using the Equity Method |
Summarized financial information of the equity method investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | April 30,
​ |  | ​ | ​ | ​ | ​ | 2023 |  | 2022
​ | ​ | ​ | ​ | ​ | ​ | (In thousands)
Current assets | ​ | ​ | ​ | ​ | ​ | $ | 1,908 | ​ | $ | 3,243
Noncurrent assets | ​ | ​ | ​ | ​ | ​ |  | 132,198 | ​ |  | 140,178
Current liabilities | ​ | ​ | ​ | ​ | ​ | $ | 1,691 | ​ | $ | 683
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Year Ended April 30,
​ | ​ | ​ | 2023 |  | 2022 |  | 2021
​ | ​ | ​ | (In thousands)
Revenues | ​ | ​ | $ | 3,788 | ​ | $ | 187 | ​ | $ | 159
Gross margin | ​ | ​ | ​ | 1,607 | ​ | ​ | (13,113) | ​ | ​ | (1,241)
Realized and unrealized (losses) gains on investments | ​ | ​ | ​ | (23,967) | ​ | ​ | 63,314 | ​ | ​ | (131,971)
Net (loss) income | ​ | ​ | $ | (22,585) | ​ | $ | 40,349 | ​ | $ | (190,454)

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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