Adams Resources & Energy, Inc. (ARE), along with its subsidiaries, is engaged in the business of crude oil marketing, tank truck transportation of liquid chemicals, and oil and gas exploration and production. The Company's segments include: Marketing Segment, Transportation Segment, and Oil and Gas Segment. The Company manages its Marketing Segment through its subsidiary, Gulfmark Energy, Inc. (Gulfmark), which is engaged in marketing crude oil. Gulfmark operates 205 tractor-trailer rigs and maintains over 121 pipeline inventory locations or injection stations. ARE operates its Transportation Segment through its subsidiary, Service Transport Company (STC), which transports liquid chemicals. STC operates 308 truck tractors, of which 285 are Company-owned with 23 independent owner-operator units. The Company manages its Oil and Gas Segment through its subsidiary, Adams Resources Exploration Corporation (AREC), which explores and develops domestic oil and natural gas properties.