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Organization and Significant Accounting Policies - (Details) - USD ($) $ in Thousands | Sep. 15, 2021 | Jan. 29, 2022 | Apr. 30, 2021 | Feb. 19, 2019
--- | --- | --- | --- | ---
Restricted cash |  | $ 1,823 | $ 8,322 |
Altoy |  |  |  |
Ownership interest | 85.00% |  |  |
Toygun Savunma Sanayi ve Havacilik Anonim Sirketi |  |  |  |
Percentage of shares sold | 35.00% |  |  |
Toygun Savunma Sanayi ve Havacilik Anonim Sirketi | Altoy |  |  |  |
Ownership interest | 50.00% |  |  |
Arcturus UAV Inc. |  |  |  |
Ownership interest acquired |  |  |  | 100.00%

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