American Midstream Partners, LP owns, operates, develops and acquires a diversified portfolio of midstream energy assets. It operates through three segments: Gathering and Processing, Transmission and Terminals. In its Gathering and Processing segment, it receives fee-based and fixed-margin compensation for gathering, transporting and treating natural gas. In its Transmission segment, it receives fee-based and fixed-margin compensation primarily related to capacity reservation charges under its firm transportation contracts and the transportation of natural gas pursuant to its interruptible transportation and fixed-margin contracts. In its Terminals segment, it receives fee-based compensation on guaranteed firm storage contracts and throughput fees charged to its customers when their products are either received or disbursed along with other operational charges associated with ancillary services provided to its customers, such as excess throughput, steam heating, truck weighing, etc.