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Note 11 - Lease Right-to-use (Tables)
3 Months Ended
Jul. 31, 2020
Notes Tables  
Lessee, Finance Lease, Right of Use Assets [Table Text Block]
   
July 31, 2020
 
Right-to-use assets
  $
44,349
 
Less accumulated depreciation
   
3,559
 
Total
  $
40,790
 
Finance Lease, Liability, Fiscal Year Maturity [Table Text Block]
2021
  $
5,245
 
2022
   
5,246
 
2023
   
5,300
 
2024
   
5,342
 
2025
   
5,255
 
Thereafter
   
58,299
 
Total minimum lease payments
   
84,687
 
Less amount representing interest
   
41,589
 
Present value of net minimum lease payments
   
43,098
 
Less current maturities of lease liability
   
1,200
 
Lease liability, net of current maturities
  $
41,898