Annual report pursuant to Section 13 and 15(d)

Note 13 - Convertible Notes Payable (Details Textual)

v3.22.0.1
Note 13 - Convertible Notes Payable (Details Textual) - USD ($)
 12 Months Ended
Apr. 08, 2020
Nov. 30, 2021
Nov. 30, 2020
Oct. 25, 2020
May 20, 2019
Oct. 31, 2018
Convertible Notes Payable, Current $ 6,950,000          
Gain (Loss) on Extinguishment of Debt, Total   $ 0 $ (6,027,000)      
Warrants Issued with April/ May 2019 Notes [Member]            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)         832,106  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)         $ 2.50  
Warrants Issued with October 2018 Notes [Member]            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           510,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 2.50   $ 2.50
Convertible Notes Payable [Member]            
Amortization of Debt Discount (Premium)   800,000        
Interest Expense, Total   200,000        
Gain (Loss) on Extinguishment of Debt, Total (6,000,000.0)          
Convertible Notes Payable, Total 5,400,000          
Interest Payable $ 400,000          
Convertible Notes Payable Converted into Series A Preferred Stock [Member]            
Debt Conversion, Converted Instrument, Shares Issued (in shares) 1,391          
Debt Conversion, Converted Instrument, Original Issue Price $ 5,000          
Debt Conversion, Converted Instrument, Amount   $ 11,562,000      
Convertible Notes Payable Converted into Series A Preferred Stock and Warrants [Member]            
Debt Conversion, Converted Instrument, Amount $ 11,800,000          
Conversion of Accrued Interest into Warrants [Member]            
Debt Conversion, Converted Instrument, Warrants or Options Issued (in shares) 149,842          
Debt Conversion, Converted Instrument, Warrants Issued Per $1000 (in shares) 400