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Related Party Transactions (Details) - USD ($) | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 27, 2019 | Jul. 28, 2018 | May 10, 2019 | Apr. 30, 2019 | Feb. 09, 2019 | Feb. 08, 2019 | Jan. 29, 2019 | Dec. 27, 2017
Long-Term Incentive Awards |  |  |  |  |  |  |  |
Revenue | $ 12,335,000 | $ 11,563,000 |  |  |  |  |  |
Unbilled related party receivables | 12,649,000 |  |  | $ 9,028,000 |  |  |  |
Design and Development Agreement |  |  |  |  |  |  |  |
Long-Term Incentive Awards |  |  |  |  |  |  |  |
Maximum net value | 134,354,000 |  |  |  |  |  |  |
HAPSMobile | Design and Development Agreement |  |  |  |  |  |  |  |
Long-Term Incentive Awards |  |  |  |  |  |  |  |
Revenue | 12,335,000 | $ 11,563,000 |  |  |  |  |  |
Unbilled related party receivables | $ 12,649,000 |  |  | $ 9,028,000 |  |  |  |
HAPSMobile |  |  |  |  |  |  |  |
Long-Term Incentive Awards |  |  |  |  |  |  |  |
Ownership percentage | 5.00% |  | 10.00% | 10.00% | 10.00% | 5.00% | 5.00% | 5.00%
AeroVironment | HAPSMobile |  |  |  |  |  |  |  |
Long-Term Incentive Awards |  |  |  |  |  |  |  |
Ownership percentage | 5.00% |  |  |  |  |  |  |

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