Core-Mark Holding Company, Inc. is a wholesale distributor to the convenience retail industry in North America. The Company provides sales, marketing, distribution and logistics services. As of December 31, 2016, the Company offered services to over 43,000 customer locations across the United States and Canada through 30 distribution centers. The Company's segments include the United States, Canada and Corporate. The Company's primary customer base consists of traditional convenience stores, as well as alternative outlets selling consumer packaged goods. The Company's traditional convenience store customers include various national and super-regional convenience store operators, as well as independently owned convenience stores. Its alternative outlet customers include a range of store formats, including grocery stores, drug stores, liquor stores, cigarette and tobacco shops, hotel gift shops, military exchanges, college and corporate campuses, casinos and hardware stores.