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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Statement of Stockholders' Equity [Abstract] |  |  |  |
Dividends per share | $ 0.20 | $ 0.19 | $ 0.60 | $ 0.57
Excise of stock option, shares |  |  | 3,136 |
Treasury shares |  |  | 106,894 |

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