Annual report pursuant to Section 13 and 15(d)

Note 4 - Summary of Significant Accounting Policies (Details Textual)

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Note 4 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Aug. 31, 2022
Nov. 30, 2022
Nov. 30, 2021
Nov. 30, 2020
Goodwill, Impairment Loss $ 0      
Restricted Cash, Current   $ 0 $ 92  
Accounts Receivable, Allowance for Credit Loss, Ending Balance   10 10  
Tangible Asset Impairment Charges, Total   $ 0 0  
Standard Product Warranty, Term (Year)   1 year    
Extended Product Warranty, Term (Year)   3 years    
Advertising Expense   $ 5,500 2,700  
Research and Development Expense, Total   500 300  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total   $ 0 0  
Customer Lists [Member]        
Finite-Lived Intangible Asset, Useful Life (Year)   2 years    
Minimum [Member] | Patents [Member]        
Finite-Lived Intangible Asset, Useful Life (Year)   10 years    
Minimum [Member] | Computer Equipment and Software [Member]        
Property, Plant and Equipment, Useful Life (Year)   3 years    
Minimum [Member] | Leasehold Improvements [Member]        
Property, Plant and Equipment, Useful Life (Year)   3 years    
Maximum [Member]        
Accounts Receivable, Allowance for Credit Loss, Ending Balance   $ 20 $ 20 $ 20
Maximum [Member] | Patents [Member]        
Finite-Lived Intangible Asset, Useful Life (Year)   17 years    
Maximum [Member] | Computer Equipment and Software [Member]        
Property, Plant and Equipment, Useful Life (Year)   5 years    
Maximum [Member] | Leasehold Improvements [Member]        
Property, Plant and Equipment, Useful Life (Year)   7 years