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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Repurchased of common stock shares | $ 200,000 |  |
Common stock issued in public stock offering, Shares |  |  | 6,325
Retained Earnings [Member] |  |  |
Cash dividends declared, per common share | $ 1.02 | $ 0.96 | $ 0.96

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