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Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Common stock issued to ESOP, shares (in shares) | 8,333 | 7,294 | 15,118
Common stock issued through dividend reinvestment, shares (in shares) | 38,787 | 30,766 | 21,383
Cash dividends, per share (in dollars per share) | $ 0.84 | $ 0.84 | $ 0.84

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