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Stock-Based Compensation, Stock Incentive Plan (Details) - shares
12 Months Ended
Jul. 24, 2024
Jan. 31, 2024
Nov. 13, 2019
Nov. 12, 2014
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Nov. 11, 2020
Stock Incentive Plans [Abstract]                
Granted (in shares)         24,600 4,000    
Outstanding stock options (in shares)         333,500 319,700 364,916  
Stock Options [Member]                
Stock Incentive Plans [Abstract]                
Granted (in shares)         24,600      
Award vesting period         5 years      
Incentive stock options and non-qualified stock options, vested and exercisable         20.00%      
Commencement period of incentive and non-qualified options         1 year      
Additional percentage vested on each successive anniversary         20.00%      
2014 Stock Incentive Plan [Member]                
Stock Incentive Plans [Abstract]                
Number of shares authorized under plan (in shares)       300,000        
Award vesting period         3 years      
Termination date         Aug. 13, 2024      
Outstanding stock options (in shares)         155,600      
Term of share-based payment award         10 years      
2014 Stock Incentive Plan [Member] | Share Awards [Member]                
Stock Incentive Plans [Abstract]                
Granted (in shares) 1,600       1,600      
2014 Stock Incentive Plan [Member] | Share Awards [Member] | Maximum [Member]                
Stock Incentive Plans [Abstract]                
Aggregate number of shares available for grant (in shares)       75,000        
Percentage of shares available for grant       25.00%        
2014 Stock Incentive Plan [Member] | Stock Options [Member]                
Stock Incentive Plans [Abstract]                
Aggregate number of shares of common stock reserved for future issuance (in shares)       225,000        
Granted (in shares) 23,000 4,000            
Award vesting period         5 years      
2019 Stock Incentive Plan [Member]                
Stock Incentive Plans [Abstract]                
Number of shares authorized under plan (in shares)     250,000          
Aggregate number of shares of common stock reserved for future issuance (in shares)     250,000          
Award vesting period         5 years      
2019 Stock Incentive Plan [Member] | Share Awards [Member]                
Stock Incentive Plans [Abstract]                
Aggregate number of shares available for grant (in shares)               62,500
2019 Stock Incentive Plan [Member] | Share Awards [Member] | Maximum [Member]                
Stock Incentive Plans [Abstract]                
Aggregate number of shares available for grant (in shares)     62,500          
Percentage of shares available for grant     25.00%          
2019 Stock Incentive Plan [Member] | Stock Options [Member]                
Stock Incentive Plans [Abstract]                
Aggregate number of shares available for grant (in shares)         800     187,500
Granted (in shares) 1,600              
Award vesting period         5 years