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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Statement of Stockholders' Equity [Abstract]    
Cash dividends declared (in dollars per share) $ 0.24 $ 0.23
Common stock purchased by directors' deferred compensation plan, net shares (in shares) 6,900 8,800