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Income Taxes (Narrative) (Details) - USD ($) | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | --- | ---
Income Tax Disclosure [Abstract] |  |  |
Gross tax contingency reserve | $ 925,000 | $ 1,253,000 | $ 968,000
Accrued tax liabilities included in the gross tax contingency reserve | 400,000 |  |
Accrued interest and penalties included in the gross tax contingency reserve | 507,000 | 529,000 |
Gross tax contingency reserve, classified as current liabilities | 0 |  |
Gross tax contingency reserve, classified as noncurrent liabilities | 925,000 | 1,253,000 |
Federal [Member] |  |  |
Income Tax Authority [Line Items] |  |  |
Prepaid income taxes |  | 5,100,000 |
State and Local Jurisdiction |  |  |
Income Tax Authority [Line Items] |  |  |
Prepaid income taxes | $ 1,900,000 | $ 1,100,000 |

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