CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	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