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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY      
Dividends declared (in dollars per share) $ 1.58 $ 1.50 $ 1.44
Share retirement, shares 27,733 54,285 181,417
Common stock grants awarded, net of unearned compensation, shares 16,403 9,192 8,506
Unearned income $ 210 $ 182 $ 520