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Consolidated Statements of Changes In Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Repurchase and retirement of common stock (in shares) | 504,939 | 181,640 | 651,045 | 387,836
Cash dividends declared on common stock (in dollars per share) | $ 0.10 | $ 0.10 | $ 0.20 | $ 0.20

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