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Note 6 - Restricted and Unrestricted Cash (Tables)
12 Months Ended
Jun. 30, 2022
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
   June 30, 

(dollars in thousands)

 

2022

  

2021

 

Cash and cash equivalents

 $22,314  $14,436 

Restricted cash

  1,000   1,000 

Total cash, cash equivalents, and restricted cash

 $23,314  $15,436