American Idol that season, but left after just one season. On January 11, 2010, Simon Cowell left the show to pursue introducing the American version of his show "The X Factor" for 2011. Jennifer Lopez and Steven Tyler joined the judging panel in the tenth season, but both left after two seasons. They were replaced by three new judges, Mariah Carey, Nicki Minaj and Keith Urban, who joined Randy Jackson in the twelfth season. However both Carey and Minaj left after one season, and Randy Jackson departed the show after twelve seasons as a judge but would return as a mentor. Urban
American Idol (season 13) night before with all three judges on hand to toast the forthcoming announcement. On September 3, 2013, Lopez and Connick Jr. were officially announced as judges for this season along with the confirmation of Jackson being the new mentor. Lopez is the first "American Idol" judge to return after leaving at the end of the eleventh season. It was also later reported that Idol alumni Adam Lambert and Chris Daughtry would be assisting Jackson in mentoring the contestants. In a rules change from past seasons, semifinalists from the twelfth season (but not previous seasons) who were not in the top