CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Stockholders' Equity [Abstract]
Accounting Standards Update [Extensible List]		Accounting Standards Update 2022-02 [Member]	Accounting Standards Update 2022-02 [Member]
Cash dividends declared (in dollars per share)	$ 1.38	$ 1.33	$ 1.29
Treasury stock issued for restricted stock awards (in shares)	136,450	61,484	36,166
Forfeitures of restricted stock awards (in shares)	44,924	34,841	63,667
Repurchase of S&T Stock (in shares)	948,270	0	739,426