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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]      
Cash dividends per share (in dollars per share) $ 1.08 $ 1.05 $ 1.04