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
Charles Jackson (judge) of the United States Oliver Wendell Holmes, Jr. Charles Jackson (judge) Charles Jackson (31 May 1775 – 13 December 1855) was an American jurist. He was born in Newburyport, Massachusetts. Jackson was the son of Newburyport merchant and Continental Congress Massachusetts delegate Jonathan Jackson and Hannah Tracy. He graduated from Harvard University in 1793, studied law with Chief Justice Parsons, and began to practice in 1796 at Newburyport. In 1803, he relocated to Boston, where, associated with Judge Hubbard, he had a most lucrative practice, probably more lucrative than any other in New England had been up until that time.