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Note 13 - Sales-type Leases (Tables)
 3 Months Ended
Feb. 29, 2020
Notes Tables  
Schedule of Sales-type Leases [Table Text Block]
   
February 29, 2020
    
November 30, 2019
  
Minimum lease receivable, current
   $
124,776
     $
162,425
  
Unearned interest income, current
    
(8,220
 )    
(14,420
 )
Net investment in sales-type leases, current
   $
116,556
     $
148,005
  
                 
Minimum lease receivable, long-term
   $
-
     $
5,851
  
Unearned interest income, long-term
    
-
      
(69
 )
Net investment in sales-type leases, long-term
   $
-
     $
5,782
  
Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block]
Year Ending November 30,
  
Amount
  
2020
   $
118,924
  
2021
    
5,852
  
Total
   $
124,776