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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended
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Jan. 31, 2020 | Oct. 31, 2019 | Jul. 31, 2019
Statement of Stockholders' Equity [Abstract] |  |  |
Cash dividends paid (in usd per share) |  | $ 0.19 | $ 0.19
Stock options exercised (in shares) | 2,300 |  |

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