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Other Events (Details) $ / shares in Units, $ in Thousands, $ in Millions |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
Dec. 06, 2019 USD ($) $ / shares | Apr. 30, 2019 MXN ($) | Jul. 31, 2018 MXN ($) | Jan. 31, 2020 USD ($) | Jan. 31, 2019 USD ($)
Dividend declared per share | $ / shares | $ 1.10 |  |  |  |
Dividend amount paid to shareholders | $ | $ 19,400 |  |  | $ 19,354 | $ 17,568
Mexican Tax Authority [Member] |  |  |  |  |
Employee profit sharing liability |  |  | $ 118 | 6,200 |
Tax Year 2011 [Member] | Mexican Tax Authority [Member] |  |  |  |  |
Final tax assessment related to Income Tax, Flat Rate Business Tax, and Value Added Tax |  | $ 2,200 |  | 116,400 |
Tax Year 2013 [Member] | Mexican Tax Authority [Member] |  |  |  |  |
Final tax assessment related to Income Tax, Flat Rate Business Tax, and Value Added Tax |  |  | $ 2,600 | $ 137,500 |

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