The American Popcorn Company, maker of Jolly Time brand popcorns, is adding 43,000 square feet to its manufacturing operations of microwave popcorn in Sioux City, Iowa, and creating up to 40 jobs, the television station KTIV reports.

Weight Watchers recently endorsed its Healthy Pop line, and the increased consumption of Jolly Time's products led to the expansion.

"Weight Watchers is a very powerful brand in itself, and the heaviest consumers of microwave popcorn are also dieters, and so this has been a great partnership," said American Popcorn President Garry Smith.