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Operating Leases (Details) - USD ($)
$ in Thousands
 9 Months Ended
Jan. 31, 2022
Apr. 30, 2021
ROU Assets and Lease Liabilities [Abstract]    
Operating lease ROU assets $ 118,155 $ 121,430
Short-term portion of operating lease liabilities 21,598 22,440
Operating lease liabilities, non-current 139,587 $ 145,832
Increase (decrease) in ROU assets due to new leases as well as modifications and remeasurements to existing operating leases 10,200  
Increase (decrease) in operating lease liabilities due to new leases as well as modifications and remeasurements to existing operating leases $ 10,100