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Common Stock and Common Stock Equivalents (Tables)
 12 Months Ended
Jun. 30, 2024
Common Stock And Common Stock Equivalents Abstract  
Schedule of share based compensation activity [Table Text Block]
    2024           2023  
    Number
of
shares		     Weighted average
exercise price		     Weighted
average
remaining
contractual
term		     Number
of
shares		     Weighted average
exercise price		  
                               
Options outstanding at beginning of the year   28,000   $ 7.80     3.75 years     28,000   $ 7.80  
Options granted   -     n/a           -     n/a  
Options canceled or expired   28,000     n/a           -     n/a  
                               
Options outstanding at end of the year   -     n/a     n/a     28,000   $ 7.80  
                               
Options exercisable at end of the year   -     n/a           22,250   $ 8.26  
                               
Range of exercise prices at end of the year         n/a               $ 4.65 - 13.50