Terry sold his company and its backlog to CBS in 1953 and retired. CBS continued to operate the studio for nearly 15 years afterward, with the studios now under management by Gene Deitch. The output divided between theatrical short cartoons and television series, as well as creating new characters such as Tom Terrific, Lariat Sam, and Deputy Dawg, Sidney the Elephant, Gaston Le Crayon, John Doormat, and Clint Clobber (who would be used again as Tom's human owner in Deitch's Tom and Jerry). Around this time, Terrytoons also began producing cartoons in CinemaScope.