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Stockholders' Equity (Details) | Jul. 31, 2024 vote $ / shares shares | Apr. 30, 2024 $ / shares shares | Aug. 31, 2023 shares
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Equity [Abstract] |  |  |
Common stock, shares authorized (in shares) | 5,000,000 | 5,000,000 |
Common stock, par value (in dollars per share) | $ / shares | $ 2.50 | $ 2.50 |
Votes per share | vote | 1 |  |
Common stock, shares outstanding (in shares) | 2,872,000 | 2,839,000 |
Number of shares authorized to be repurchased (in shares) |  |  | 100,000
Remaining number of shares authorized to be repurchased (in shares) | 33,809 |  |

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