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Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) - $ / shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Retained Earnings [Member] |  |
Cash dividends per share (in dollars per share) |  | $ 0.6
Treasury acquired, shares (in shares) | 512,449 | 58,200
Cash dividends per share (in dollars per share) | $ 0.69 |

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