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Organization and Significant Accounting Policies - (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2022 | Apr. 30, 2022 USD ($) segment | May 03, 2021 | Apr. 30, 2021 USD ($) | Feb. 19, 2021 | Jun. 10, 2019
Percentage of ownership interest sold | 7.00% |  |  |  |  |
Number of reportable segments | segment |  | 4 |  |  |  |
Restricted cash | $ |  | $ 0 |  | $ 8,322,000 |  |
HAPSMobile |  |  |  |  |  |
Ownership interest |  | 100.00% |  |  |  |
Pulse Aerospace, LLC |  |  |  |  |  |
Ownership interest acquired |  |  |  |  |  | 100.00%
Arcturus UAV Inc. |  |  |  |  |  |
Ownership interest acquired |  |  |  |  | 100.00% |
Telerob |  |  |  |  |  |
Ownership interest acquired |  |  | 100.00% |  |  |

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