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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended
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Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020
Shares of restricted stock awards surrendered (in shares) | 1,404 | 1,711 |  | 1,904
Cash dividends per share (in dollars per share) | $ 0.31 | $ 0.31 | $ 0.31 | $ 0.31

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