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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Statement of Stockholders' Equity [Abstract] |  |
Dividends per share | $ 0.20 | $ 0.19
Excise of stock option, shares | 5,766 | 3,136

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