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Note 19 - Fair Value Loss on Equity Securities (Tables)
12 Months Ended
Jul. 31, 2023
Notes Tables  
Unrealized Gain (Loss) on Investments [Table Text Block]
  

Year Ended July 31,

 
  

2023

  

2022

  

2021

 

Urealized loss from investment in Anfield shares

 $(2,214) $(1,925) $- 

Urealized loss from investment in Anfield warrants

  (1,048)  (1,105)  - 

Unrealized gain from investment in UEX shares

  -   1,132   - 

Unrealized and realized gain (loss) from other public listed companies

  (8,737)  547   - 

Realized loss from investment in UEX shares transferred as consideration for UEX Acquisition

  (1,084)  -   - 

Total

 $(13,083) $(1,351) $-