For decades, G-III Apparel had no trouble heating up sales of coats and jackets shipped during the chilly months. Problem was, as a maker of outdoor clothing, its business cooled during the warmer seasons. So, a few years ago, G-III (GIII) began diversifying its lineup beyond its roots in outerwear and create a more balanced, all-season clothing company. Since 2005, it's made five acquisitions that have broadened its product line, expanded its