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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Statement of Stockholders' Equity [Abstract] |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.30 | $ 0.28 | $ 0.59 | $ 0.56
Treasury stock issued for restricted stock awards (in shares) |  | 98,519 | 4,250 | 99,711
Forfeitures of restricted stock awards (in shares) | 51,469 | 21,157 | 55,225 | 51,999
Repurchase of S&T Stock (in shares) | 151,220 |  | 151,220 |

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