Note 3 - Fair Value Measurement (Details Textual) - shares  | 
Jan. 31, 2024  | 
Oct. 31, 2023  | 
|---|---|---|
| Class of Warrant or Right, Outstanding (in shares) | 0 | |
| Public Warrants [Member] | ||
| Class of Warrant or Right, Outstanding (in shares) | 13,017,677 | |
| Private Warrants [Member] | ||
| Class of Warrant or Right, Outstanding (in shares) | 0 | 
| X | ||||||||||
- Definition Number of warrants or rights outstanding. No definition available. 
  | 
| X | ||||||||||
- Details 
  | 
| X | ||||||||||
- Details 
  |