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Stockholders' Equity (Narratives) (Details) - $ / shares | 6 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Common Stock [Member] | Dividends Declared Two [Member] |  |
Dividends Stock [Abstract] |  |
Dividends Payable, Date Declared |  | Aug. 18, 2022
Dividend paid, amount per share |  | $ 0.50
Dividends Payable, Date of Record |  | Sep. 06, 2022
Dividends Payable, Date to be Paid |  | Sep. 20, 2022
Common Stock [Member] | Dividends Declared Three [Member] |  |
Dividends Stock [Abstract] |  |
Dividends Payable, Date Declared |  | Apr. 06, 2022
Dividend paid, amount per share |  | $ 0.50
Dividends Payable, Date of Record |  | Apr. 18, 2022
Dividends Payable, Date to be Paid |  | Apr. 29, 2022
Nonvoting Common Stock [Member] | Dividends Declared Two [Member] |  |
Dividends Stock [Abstract] |  |
Dividends Payable, Date Declared | Aug. 17, 2023 |
Dividend paid, amount per share | $ 0.04 |
Dividends Payable, Date of Record | Sep. 19, 2023 |
Dividends Payable, Date to be Paid | Sep. 29, 2023 |
Nonvoting Common Stock [Member] | Dividends Declared Three [Member] |  |
Dividends Stock [Abstract] |  |
Dividends Payable, Date Declared | Jun. 07, 2023 |
Dividend paid, amount per share | $ 0.04 |
Dividends Payable, Date of Record | Jun. 20, 2023 |
Dividends Payable, Date to be Paid | Jun. 30, 2023 |

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