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Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Retained Earnings [Member]        
Common stock dividends per share $ 0.14 $ 0.11 $ 0.38 $ 0.33