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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020
Statement of Stockholders' Equity |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.38 | $ 0.37 | $ 0.37 | $ 0.36 | $ 0.36 | $ 0.36
Share retired, shares | 25,699 | 7,828 | 13,101 | 90,165 | 10,383 | 53,746
Common stock grants awarded, net of unearned compensation |  |  | $ 182 |  |  |
Common stock grants awarded, net of unearned compensation (in shares) |  |  | 9,192 |  |  |

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