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Equity Methods Investments - Investment in Limited Partnership Fund (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 30, 2021 | Oct. 31, 2020 | Oct. 30, 2021 | Oct. 31, 2020 | Apr. 30, 2021
Equity Method Investments |  |  |  |  |
Equity method investment income (loss), net of tax | $ 1,133 | $ (9,522) | $ (8) | $ (10,810) |
Carrying value of investment | 11,271 |  | 11,271 |  | $ 7,168
Limited Partnership Fund |  |  |  |  |
Equity Method Investments |  |  |  |  |
Capital contributions |  |  | 1,738 | 1,173 |
Additional capital contributions |  |  | 639 |  |
Limited Partnership Fund | Equity method investment loss, net of tax |  |  |  |  |
Equity Method Investments |  |  |  |  |
Equity method investment income (loss), net of tax | 1,852 | 0 | 2,365 | (280) |
Income tax expense from equity method investments |  |  | 529 |  |
Limited Partnership Fund | Long term investments |  |  |  |  |
Equity Method Investments |  |  |  |  |
Carrying value of investment | $ 11,271 |  | $ 11,271 |  | $ 7,168
HAPSMobile |  |  |  |  |
Equity Method Investments |  |  |  |  |
Equity method investment income (loss), net of tax |  |  |  | $ (10,810) |
HAPSMobile | Equity method investment loss, net of tax |  |  |  |  |
Equity Method Investments |  |  |  |  |
Equity method investment income (loss), net of tax |  | $ (9,522) |  |  |

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