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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Statement of Stockholders' Equity [Abstract] |  |
Distribution of shares of treasury stock for employee restricted stock awards (in shares) | 3,985 |
Cash dividends declared (in dollars per share) | $ 0.31 | $ 0.26
Distribution of shares of treasury stock for directors' compensation (in shares) | 8,575 | 9,291
Distribution of shares of treasury stock for employee stock compensation (in shares) |  | 3,860
Purchase of shares of treasury stock (in shares) | 15,388 | 22,875
Sale of shares of treasury stock (in shares) | 2,545 | 3,691

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