Forward Tristan King scored with 1 minute, 21 seconds remaining in overtime to lift the Steelheads to a 5-4 win over the Utah Grizzlies on Friday night at CenturyLink Arena.
Tyler Gron scored twice for the Steelheads, who improved to 30-12-5 and 17-3-2 on their home ice. Gron has scored eight goals in 10 games since joining the team in January.
William LaCasse and Justin Taylor scored Idaho's other goals.
Rookie goalie Josh Robinson stopped 43-of-47 shots to earn the win.
Utah and Idaho play again at 7:05 p.m. Saturday and 4:05 p.m. Sunday.