Share Repurchase Plan	6 Months Ended
	Jun. 30, 2022
Equity [Abstract]
SHARE REPURCHASE PLAN	SHARE REPURCHASE PLANOn March 21, 2022, our Board of Directors authorized an extension of its $50 million share repurchase plan, which was set to expire March 31, 2022. This authorization extended the expiration date of the repurchase plan through March 31, 2023. The plan permits S&T to repurchase shares up to the previously authorized $50 million in aggregate value of S&T's common stock through a combination of open market and privately negotiated repurchases. The specific timing, price and quantity of repurchases will be at the discretion of S&T and will depend on a variety of factors, including general market conditions, the trading price of common stock, legal and contractual requirements, applicable securities laws and S&T's financial performance. The repurchase plan does not obligate us to repurchase any particular number of shares. At June 30, 2022 there was $33.3 million of capacity remaining under the plan. We expect to fund any repurchases from cash on hand and internally generated funds. Any share repurchases will not begin until permissible under applicable laws. During the three and six months ended June 30, 2022, we repurchased 151,220 common shares under this plan at a total cost of $4.2 million, or an average of $27.46 per share. During the three and six months ended June 30, 2021 we had no repurchases.