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Investments in Companies Accounted for Using the Equity Method (Tables) | 12 Months Ended
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Apr. 30, 2021
Investments in Companies Accounted for Using the Equity Method |
Summarized financial information of the equity method investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | April 30, | ​ | ​ | ​
​ |  | ​ | 2021 |  | 2020 |  | ​ | ​
​ | ​ | ​ | (In thousands) | ​ | ​ | ​
Current assets | ​ | ​ | $ | 9,106 | ​ | $ | 67,387 | ​ | ​ | ​
Noncurrent assets | ​ | ​ |  | 65,717 | ​ |  | 170,602 | ​ | ​ | ​
Current liabilities | ​ | ​ |  | 76,492 | ​ |  | 72,505 | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Year Ended April 30,
​ | ​ | ​ | 2021 |  | 2020 |  | 2019
​ | ​ | ​ | (In thousands)
Revenues | ​ | ​ | $ | 159 | ​ | $ | 25 | ​ | $ | —
Gross loss | ​ | ​ | ​ | (1,241) | ​ | ​ | (1,331) | ​ | ​ | —
Realized and unrealized losses on investments | ​ | ​ | ​ | (131,971) | ​ | ​ | (7,028) | ​ | ​ | —
Net loss | ​ | ​ | ​ | (190,454) | ​ | ​ | (85,818) | ​ | ​ | (63,107)

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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 http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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