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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statement of Stockholders' Equity [Abstract] |  |  |
Cash dividends declared (in dollars per share) | $ 1.29 | $ 1.20 | $ 1.13
Treasury stock issued for restricted stock awards (in shares) | 36,166 | 4,250 | 130,670
Forfeitures of restricted stock awards (in shares) | 63,667 | 87,208 | 77,483
Repurchase of S&T Stock (in shares) | 739,426 | 268,503 |

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