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Note 6 - Revenue, Deferred Revenue and Accounts Receivable (Tables)
12 Months Ended
Nov. 30, 2022
Notes Tables  
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
    

Deferred revenue balance, November 30, 2020

 $4,902 

Net additions to deferred revenue

  33,641 

Reductions in deferred revenue for revenue recognized during the fiscal year

  (37,418)

Deferred revenue balance, November 30, 2021

  1,125 

Net additions to deferred revenue

  30,817 

Reductions in deferred revenue for revenue recognized during the fiscal year

  (31,144)

Deferred revenue balance, November 30, 2022

 $798 

Less current portion

  458 

Deferred revenue, non-current

 $340 
Disaggregation of Revenue [Table Text Block]
  

Years Ended

 
  

November 30,

 
  

2022

  

2021

 

U.S. Domestic

 $38,856  $38,690 

South Africa

  2,569   3,470 

Europe/South America/Asia

  6,431    

Canada

  180    

Total

 $48,036  $42,160 
  

Years Ended

 
  

November 30,

 

Distribution channel

 

2022

  

2021

 

Wholesale (dealer/distributors)

 $17,504  $9,568 

E-commerce

  30,532   32,592 

Total

 $48,036  $42,160