State troopers in south-central Idaho say they have fewer law-enforcement officers to handle the increase in marijuana being transported from neighboring states. Idaho State Police Lt. Kevin Haight says compared to this time last year, troopers in this region have seized more marijuana with about half the staff. He says more marijuana is entering from states with medical pot programs, such as Oregon and Nevada, and from Washington, which legalized the sale of recreational marijuana.  He tells the Times-News the increase is one reason the state police is bringing back its drug detection dog program. Haight says troopers from January until now have made 181 drug arrests and seized 129 pounds of marijuana. That is compared to 232 arrests and 120 pounds seized over the same period last year.