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Commitment and Contingencies (Tables)
12 Months Ended
Apr. 30, 2019
Commitments and Contingencies [Abstract]  
Net Rent Expense for Operating Leases
The following schedule shows the composition of net rent expense for operating leases:

  
2019
  
2018
  
2017
 
Minimum Rental
 
$
29,066
  
$
31,451
  
$
35,464
 
Less: Sublease Rentals
  
(719
)
  
(708
)
  
(626
)
Total
 
$
28,347
  
$
30,743
  
$
34,838
 

Estimated Future Minimum Annual Rental Commitments under Non-cancelable Real and Personal Property Leases
At April 30, 2019, estimated future minimum annual rental commitments under non-cancelable real and personal property leases, were as follows:

Fiscal Year
 
Amount
 
2020
 
$
30,887
 
2021
  
27,326
 
2022
  
23,183
 
2023
  
19,257
 
2024
  
18,576
 
Thereafter
  
129,382
 
Total
 
$
248,611