Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Fair Value Measurement (Details Textual)

v3.22.0.1
Note 5 - Fair Value Measurement (Details Textual) - $ / shares
3 Months Ended
Jan. 31, 2022
Oct. 31, 2021
Dec. 06, 2018
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 11.50   $ 11.50
Public Warrants [Member]      
Class of Warrant or Right, Outstanding (in shares) 13,017,677 13,017,677  
Private Warrants [Member]      
Class of Warrant or Right, Outstanding (in shares) 0 0  
Warrant To Purchase Class A Common Stock [Member]      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 11.50    
Class of Warrant or Right, Redemption Price (in dollars per share) 0.01    
Class of Warrant or Right, Redemption, Common Stock Price Trigger (in dollars per share) $ 18.00    
Class of Warrant or Right, Redemption, Trading Period (Day) 20 days    
Class of Warrant or Right, Redemption, Trading Period Maximum (Day) 30 days