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Organization and Summary of Significant Accounting Policies - Stock Repurchases (Details)
12 Months Ended
Jun. 30, 2021
$ / shares
shares
Class of Stock  
Number of shares available for future stock repurchases under the April 2020 stock repurchase plan 266,833
Common Stock  
Class of Stock  
Purchase of common stock shares 104,982
Stock repurchased during period (in dollars per share) | $ / shares $ 16.67