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Note 14 - Shareholders' Equity (Tables)
12 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
  

Fiscal Year Ended June 30,

 
  

2022

  

2021

  

2020

 

Common shares repurchased

  -   -   1,538,363 

Cost to repurchase common shares

 $-  $-  $24,319,044 

Average price per share

 $-  $-  $15.81