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Commitments and related party transactions (Tables)
12 Months Ended
Apr. 30, 2019
Text block [abstract]  
Schedule of Transactions with Related Parties

The Company paid the following amounts to key management and directors in the years:

 

For the year ended April 30,

   2019      2018      2017  

Management fees

   $ 943      $ 1,112      $ 958  

Legal fees

     3        64        116  

Directors fees

     82        86        187  
  

 

 

    

 

 

    

 

 

 

Total

   $  1,028      $  1,262      $  1,261