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Note 16 - Capital Stock (Tables)
12 Months Ended
Jul. 31, 2023
Notes Tables  
Schedule Of Share based Compensation Warrants Activity [Table Text Block]
  

Number of

  

Weighted Average

 
  

Warrants

  

Exercise Price

 

Balance, July 31, 2020

  7,721,981  $2.03 

Issued in connection with September 2020 Offering

  6,833,333   1.80 

Issued in connection with April 2021 Offering

  181,818   4.13 

Exercised

  (8,240,505)  1.99 

Expired

  (1,109,304)  1.87 

Balance, July 31, 2021

  5,387,323   1.90 

Exercised

  (1,771,869)  1.88 

Balance, July 31, 2022

  3,615,454   1.92 

Issuance of Replacement Warrants (Note 3,15)

  4,660,580   2.95 

Exercised

  (4,359,086)  1.73 

Expired

  (59,918)  1.80 

Balance, July 31, 2023

  3,857,030  $3.31 
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Weighted Average Exercise Price

  

Number of Warrants Outstanding

  

Weighted Average Remaining Contractual Life (Years)

 

Expiry Date

$3.27   3,675,212   1.11 

September 7, 2024

 4.13   181,818   2.68 

April 5, 2026

$3.31   3,857,030   1.18