S&T Bancorp, Inc. announced unaudited consolidated earnings results for the fourth quarter and full year ended December 31, 2017. For the quarter, the company reported total interest income was $67,855,000 against $59,096,000 a year ago. Net interest income after provision for loan losses was $56,846,000 against $46,872,000 a year ago. Income before taxes was $31,549,000 against $24,169,000 a year ago. Net income was $9,294,000 against $17,659,000 a year ago. Tangible book value per share was $16.87 against $15.67 a year ago. Return on average assets was 0.52% against 1.04% a year ago. Return on average shareholders' equity was 4.14% against 8.36% a year ago. Net interest income increased $0.3 million to $57.8 million compared to $57.5 million in the third quarter of 2017. Net interest margin on a fully taxable equivalent basis (FTE) (non-GAAP) declined one basis point to 3.58% compared to 3.59% in the prior quarter. The increase in net interest income is due to an increase in average loans of $49.6 million and higher short-term rates. Diluted earnings per share were $0.27 against $0.51 a year ago. For the full year, the company reported total interest income was $260,642,000 against $227,774,000 a year ago. Net interest income after provision for loan losses was $211,850,000 against $185,294,000 a year ago. Income before taxes was $119,405,000 against $96,697,000 a year ago. Net income was $72,968,000 against $71,392,000 a year ago. Return on average assets was 1.03% against 1.08% a year ago. Return on average shareholders' equity was 8.37% against 8.67% a year ago. Diluted earnings per share were $2.09 against $2.05 a year ago. Net interest income increased $22.5 million, or 11%, in 2017 due to average loan growth of $438 million, or 8.2%, and higher short-term rates. Net interest margin (FTE) (non-GAAP) increased to 3.56% compared to 3.47% for 2016.