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Consolidated Statements of Changes to Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Issuance of shares of restricted stock, Shares | 37,382 | 38,100 | 33,000
Cash dividends declared, per share | $ 0.66 | $ 0.61 | $ 0.56
Common Stock [Member] |  |  |
Issuance of shares of restricted stock, Shares | 37,382 | 38,100 | 33,000
Issuance of shares of restricted stock, forfeitures | 2,175 | 3,220 | 2,620
Issuance of shares of common stock in acquisition | 40,049 | 1,830,000 |

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