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Stock Repurchase Program (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
1995 Stock Repurchase Program [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Stock Repurchase Program, Authorized Amount | $ 2,000,000 |
2021 Stock Repurchase Program B [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Stock Repurchase Program, Authorized Amount | 45,500,000 |
Stock Repurchase Program, Additional Authorized Amount | $ 43,360,247 |
Stock Repurchased and Retired During Period, Shares (in shares) | 0 | 0
Estate of Former Chairman [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Stock Repurchase Program, Authorized Amount | $ 2,000,000 |

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