Marginally performing shows tend to last less than three to five years in broadcast syndication, sometimes moving to cable channels (although rerun packages of some series are sold simultaneously into both broadcast syndication and cable, and sometimes to more than one cable network) or into limited-run barter syndication (such as through The Program Exchange) after the end of their syndication runs, while more widely successful series can have a life in syndication that can run for decades ("I Love Lucy", the first series designed to be rerun, remains popular in syndication more than 60 years after its 1951 debut).