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Note 6 - Restricted and Unrestricted Cash (Tables)
12 Months Ended
Jun. 30, 2023
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
   June 30, 

(dollars in thousands)

 

2023

  

2022

 

Cash and cash equivalents

 $25,401  $22,314 

Restricted cash

  1,000   1,000 

Total cash, cash equivalents, and restricted cash

 $26,401  $23,314