USANA Health Sciences, Inc. develops and manufactures science-based nutritional and personal care products. The Company has operations in 15 markets worldwide, where it distributes and sells its products by way of direct selling. The Company reports operations in two geographic regions: North America and Asia Pacific, which is further divided into three sub-regions; Southeast Asia/Pacific, Greater China, and North Asia. North America includes the United States, Canada, Mexico, and direct sales from the United States to the United Kingdom and the Netherlands. Southeast Asia/Pacific includes Australia, New Zealand, Singapore, Malaysia, and the Philippines; Greater China includes Hong Kong, Taiwan and China; and North Asia includes Japan and South Korea. The Company�s customer base consists of two types of customers: Associates and Preferred Customers. As of December 31, 2011, the Company had 222,000 active Associates and 64,000 active Preferred Customers worldwide.