Smith had 22 points and 10 boards along with six assists and Moore added 19 points and grabbed nine rebounds. Darius Perkins, who was 4 of 9 from beyond the arc, had 12 points.
Utah State had a slim 29-28 halftime lead. Perkins nailed a trey to open the second period and start a 17-8 run to put the Aggies ahead 46-36 at the 12:04 mark. The Aggies answered every Idaho State challenge in the final 10 minutes of the period.
Geno Luzcando led Idaho State (3-7) with 21 points. Ethan Telfair added 20.