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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY [Abstract] |  |  |  |
Purchase of treasury stock (in shares) | 5,554 | 4,505 | 14,756 | 27,917
Restricted stock (in shares) | 5,331 | 6,447 | 5,419 | 6,651
Cash dividend reinvestment paid from treasury stock (in shares) |  | 6,120 |  | 10,276
Cash dividends (in dollars per share) | $ 0.460 | $ 0.446 | $ 0.920 | $ 0.989

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