Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Reconciliation of Shares Used in Calculating Basic and Diluted Earnings per Common Shares (Details)

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Summary of Significant Accounting Policies - Reconciliation of Shares Used in Calculating Basic and Diluted Earnings per Common Shares (Details) - shares
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Earnings Per Share [Abstract]      
Basic weighted-average shares of common stock outstanding 23,400,300 22,805,600 16,686,600
Effect of common stock equivalents 1,249,000 1,524,000 1,258,000
Diluted weighted-average shares outstanding 24,648,600 24,329,500 17,944,600