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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - Accumulated Earnings [Member] - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Common stock dividends per share $ 0.44 $ 0.42 $ 0.32
Preferred stock dividends per share   $ 65.00 $ 65.00