Shares of Deckers Outdoors fell after hours after the company reported weak third-quarter results, noting that sales fell 9.9% in the U.S. Deckers Outdoor s reported a 9.9% sales decline in the U.S. for its 2017 third quarter, featuring a 5.3% drop in the sale of UGG boots and shoes. Shares fell 22.8% in after-hours trading.