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Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended
Jul. 31, 2021
Jul. 30, 2022
Apr. 30, 2022
Long-Term Incentive Awards      
Revenue $ 10,352    
Unbilled related party receivables     $ 2,229
HAPSMobile | Design and Development Agreement      
Long-Term Incentive Awards      
Revenue $ 10,352,000    
SoftBank | Design and Development Agreement      
Long-Term Incentive Awards      
Maximum net value   $ 51,200