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Investments in Companies Accounted for Using the Equity Method - Investment in Limited Partnership Fund (Details) - USD ($) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Jul. 31, 2019 | Jul. 30, 2022 | Jul. 31, 2021 | Apr. 30, 2022
Equity Method Investments |  |  |  |  |
Equity method investment loss, net of tax |  |  | $ (500,000) | $ (1,141,000) |
Carrying value of investment |  |  | 17,707,000 |  | $ 15,433,000
Limited Partnership Fund |  |  |  |  |
Equity Method Investments |  |  |  |  |
Capital contributions |  | $ 10,000,000 | 0 |  |
Limited Partnership Fund | Equity method investment loss, net of tax |  |  |  |  |
Equity Method Investments |  |  |  |  |
Equity method investment loss, net of tax |  |  | (500,000) | 514,000 |
Limited Partnership Fund | Long term investments |  |  |  |  |
Equity Method Investments |  |  |  |  |
Carrying value of investment |  |  | 17,707,000 |  | $ 15,433,000
Limited Partnership Fund, Technologies and Start-Up |  |  |  |  |
Equity Method Investments |  |  |  |  |
Capital contributions | $ 20,000,000 |  | 2,774,000 |  |
Expected years contributions will be made | 5 years |  |  |  |
Additional capital contributions |  |  | $ 17,226,000 |  |
HAPSMobile |  |  |  |  |
Equity Method Investments |  |  |  |  |
Equity method investment loss, net of tax |  |  |  | $ 1,655,000 |

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