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Stock-Based Compensation, Stock Incentive Plan (Details) - shares
12 Months Ended
Nov. 13, 2019
Feb. 05, 2019
Oct. 26, 2015
Nov. 12, 2014
Jun. 30, 2021
Jun. 30, 2020
Nov. 11, 2020
Stock Incentive Plans [Abstract]              
Granted (in shares)         187,500 0  
Stock Options [Member]              
Stock Incentive Plans [Abstract]              
Granted (in shares)         187,500    
Award vesting period         5 years    
2014 Stock Incentive Plan [Member]              
Stock Incentive Plans [Abstract]              
Number of shares authorized under plan (in shares)       300,000      
Award vesting period         5 years    
2014 Stock Incentive Plan [Member] | Share Awards [Member]              
Stock Incentive Plans [Abstract]              
Granted (in shares)   6,000 69,000        
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)   27,000 207,000        
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            
2019 Stock Incentive Plan [Member] | Share Awards [Member]              
Stock Incentive Plans [Abstract]              
Aggregate number of shares available for grant (in shares)         0   62,500
Granted (in shares)         0    
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)         0   187,500
Granted (in shares)         0