Goggin, 24, is going into his second full season out of Dartmouth College. He played with the Trenton Titans last season, appearing in 62 games, before his rights were acquired by Idaho following the conclusion of the regular season. Goggin has also appeared in 12 American Hockey League games with the Rockford Ice Hogs.
The 21-year-old Reum is turning pro after competing in major-junior hockey for the Swift Current Broncos of the Western Hockey League for the past two-and-a-half seasons. He netted a career-best six goals during the 2011-12 season and picked up an additional 10 points (1g-9a) last season.